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Worksheets

Aircraft Components and Control

Total questions: 176

Worksheet time: 2hrs 38mins

Name
Class
Date
1.

Italy Capital?

a)

Oslo

b)

Rome

c)

Agra

d)

Paris

2.

Which of these are in India?

a)

Mumbai

b)

Rome

c)

Dhaka

d)

Chennai

3.

What forces are required for an aircraft to remain in flight

a)

Lift

b)

Drag

c)

Weight

d)

Thrust

4.

What part of the aircraft adjusted the pitch?

a)

Aileron

b)

Elevator

c)

Flap

d)

Rudder

5.

What part of the aircraft adjusts the roll?

a)

Elevator

b)

Flap

c)

Aileron

d)

Rudder

6.

What part of the aircraft adjusts the yaw?

a)

Rudder

b)

Elevator

c)

Slat

d)

Aileron

7.

What job does the Spoiler do?

a)

Gives better aerodynamic properties

b)

Slows the aircraft down

c)

Keeps the aircraft flying

d)

Just makes the wing looks good

8.

For an aircraft to generate more lift at slower speeds what part of the aircraft is used

a)

Flaps and Slats

b)

Spoilers

c)

Landing gear

d)

Rudder

9.

When the wing is generating more lift the air is travelling faster over the top.

a)

True

b)

False

10.

"For every action, there is an equal and opposite reaction" This is what?

a)

Newtons First Law

b)

Newtons Second Law

c)

Newtons Third Law

d)

Daniel Bernoulli

11.

What is this?

a)

Yoke

b)

Control Column

c)

Side Stick

d)

Steering wheel

12.
What is number 1 pointing at?
a)
Horizontal Stabilizer
b)
Elevator
c)
Vertical Stabilizer
d)
Rudder
13.
What is number 2 pointing at?
a)
Horizontal Stabilizer
b)
Elevator
c)
Vertical Stabilizer
d)
Rudder
14.
What is number 4 pointing at?
a)
Horizontal Stabilizer
b)
Elevator
c)
Vertical Stabilizer
d)
Rudder
15.

CG is short for?

a)

Computer graphics

b)

Center grade

c)

Center of gravity

16.

Stability is achieved by balancing at the center of gravity (commonly known as the CG).

a)

True

b)

False

17.

In the diagram above, what stability force is represented by #6?

a)

A. Pitch

b)

B. Roll

c)

C. Yaw

d)

D. Rudder

18.

In the diagram above, what stability force is represented by #7?

a)

A. Pitch

b)

B. Roll

c)

C. Yaw

d)

D. Rudder

19.

In the diagram above, what stability force is represented by #8?

a)

A. Pitch

b)

B. Roll

c)

C. Yaw

d)

D. Rudder

20.

What does VOR stand for?

a)

Very High Frequency Omnidirectional Range

b)

Virtual Online Reality

c)

Visual Orientation Recognition

d)

Variable Output Ratio

21.

What is the purpose of a VOR navigation instrument?

a)

To measure airspeed

b)

To calculate altitude

c)

To determine ground speed

d)

To determine radial position from a VOR station.

22.

How does a VOR navigation instrument work?

a)

By receiving signals from VOR ground stations and using the phase difference between the signals to determine the aircraft's radial position relative to the station.

b)

By using GPS satellites to determine the aircraft's position.

c)

By measuring the distance between the aircraft and the VOR ground station.

d)

By analyzing the magnetic field around the aircraft to determine its heading.

23.

What are the components of a VOR navigation instrument?

a)

ADF, DME, GPS

b)

Altimeter, Airspeed Indicator, Turn Coordinator

c)

ILS, VHF, ATC

d)

VOR receiver, CDI, OBS

24.

What is the range of a VOR navigation instrument?

a)

500 nautical miles

b)

100 nautical miles

c)

200 nautical miles

d)

50 nautical miles

25.

What is the significance of the OBS (Omni Bearing Selector) in a VOR navigation instrument?

a)

The OBS is used to measure the airspeed of the aircraft.

b)

The OBS is used to select and display the desired radial or course.

c)

The OBS is used to control the altitude of the aircraft.

d)

The OBS is used to adjust the volume of the VOR signal.

26.

What is the difference between a VOR and a VOR/DME navigation instrument?

a)

A VOR and a VOR/DME are the same thing.

b)

A VOR provides only direction information, while a VOR/DME provides both direction and distance information.

c)

A VOR provides both direction and distance information, while a VOR/DME provides only direction information.

d)

A VOR is used for air navigation, while a VOR/DME is used for maritime navigation.

27.

What are the limitations of a VOR navigation instrument?

a)

line-of-sight range, interference susceptibility, accuracy limitations

b)

limited coverage area, signal distortion, signal blockage

28.

How can you identify a VOR station on a VOR navigation instrument?

a)

By its Morse code identifier

b)

By its altitude

c)

By its frequency

d)

By its GPS coordinates

29.

What are the advantages of using a VOR navigation instrument?

a)

Inaccurate and unreliable navigation, inability to navigate in poor visibility conditions, and incompatibility with other navigation systems.

b)

Limited range and coverage, difficulty in interpreting the instrument readings, and high cost of installation.

c)

Accurate and reliable navigation, ability to navigate in poor visibility conditions, and compatibility with other navigation systems.

d)

Prone to interference and signal distortion, limited availability of VOR stations, and dependence on ground-based infrastructure.

30.

As angle of attack increases

a)

lift decreases and induced drag decreases

b)

lift decreases and induced drag increases

c)

lift increases and induced drag decreases

d)

lift increases and induced drag increases

31.

Parasite drag can be decreased by

a)

using flaps instead of spoilers

b)

polishing aircraft surfaces

c)

making wings shorter and thicker

d)

increasing induced drag

32.

The Wright Brothers understood that they'd have to find three solutions (objectives) to three problems. Stated simply those solutions were:

a)

Yaw, Pitch, Drag

b)

Lift, Control, Thrust

c)

Weight, Drag, Thrust

d)

Parasite Drag, Induced Drag, Total Drag

33.

The function of this control surface is to

a)

yaw around the vertical axis

b)

pitch around the vertical axis

c)

yaw around the lateral axis

d)

roll around the lateral axis

34.

The purpose of this control surface is to

a)

roll around the horizontal axis

b)

yaw around the horizontal axis

c)

roll around the lateral axis

d)

pitch around the lateral axis

35.

The purpose of this control surface is to

a)

yaw around the lateral axis

b)

pitch around the lateral axis

c)

roll around the horizontal axis

d)

yaw around the vertical axis

36.

Airflow over a wing produces pressure differences due to changes in the velocity of the air. This explanation of lift is described by

a)

Bernoulli's Principle

b)

Wright's Theorem

c)

Wilbur's Predicate

d)

Orville's Postulate

37.

The diagram illustrates the Four Forces Of Flight. Forces that oppose each other are

a)

Lift and Drag

b)

Lift and Thrust

c)

Drag and Weight

d)

Thrust and Drag

38.

This illustration is actually a clever variation on the more aerodynamically correct:

a)

Angle Of Attack vs Chord Line

b)

Four Forces Of Flight

c)

Bernoulli's Principle

39.

This model airplane displays a pronounced dihedral which functions to

a)

improve stability by producing more lift on the lower wing

b)

neutralize the lift produced by induced drag

c)

decrease the yaw of the aircraft around the vertical axis

d)

increase thrust to match increased parasite drag

40.

As the angle between the chord line and the relative wind increases

a)

angle of attack decreases, lift decreases, drag decreases

b)

angle of attack increases, lift decreases, drag increases

c)

angle of attack decreases, lift increases, drag decreases

d)

angle of attack increases, lift increases, drag increases

41.

To maintain a balanced thrust force along a propeller blade the

a)

tip of the blade has a higher angle of attack than the root (inside) of the blade

b)

inside (root) of the blade has a higher angle of attack than the tip of the blade

c)

inside (root) of the blade is designed with lower parasite drag to compensate for it's lower speed

d)

outside (tip) of the blade is designed to stall when the tip reaches the speed of sound

42.

The Wright Brothers used aluminum instead of cast iron for major engine components because

a)

aluminum is lighter than cast iron

b)

aluminum is stronger than cast iron

c)

aluminum was in common use in automotive engines

d)

each of the other answers is equally correct

43.

The photo is of wing flaps

a)

used to increase lift and decrease drag

b)

which increase dihedral at the lateral axis

c)

used to increase lift and increase drag

d)

which increase airspeed at increased angles of attack

44.

Extra Credit


In this photograph of the first flight

a)

the aircraft is moving toward the camera, Wilbur is flying, and Orville is at the left wing tip

b)

the aircraft is moving away from the camera, Orville is flying and Wilbur is at the right wing tip

c)

the aircraft is moving toward the camera, Wilbur is flying, and Orville is operating the camera

45.

The main purpose of empennage is to give stability to the aircraft.

a)

True

b)

False

46.

A movable airfoil that controls the up-and-down motion of the aircraft's nose.

a)

Trim Tabs

b)

Stabilator

c)

Elevator

d)

Rudder

47.

Attached to the back of the vertical stabilizer.

a)

Stabilator

b)

Trim Tabs

c)

Rudder

d)

Elevator

48.

Used to move the airplane’s nose left and right

a)

Rudder

b)

Stabilator

c)

Trim Tabs

d)

Elevator

49.

_____ are small, movable portions of the trailing edge of the control surface.

a)

Trim Tabs

b)

Rudder

c)

Stabilator

d)

Elevator

50.

Used to prevent the aircraft from yawing back and forth.

a)

Horizontal Stabilizer

b)

Vertical Stabilizer

c)

Elevator

d)

Stabilator

51.

Used to prevent the airplane from pitching up or down.

a)

Horizontal Stabilizer

b)

Vertical Stabilizer

c)

Elevator

d)

Stabilator

52.

The powerplant usually includes both the engine and the propeller.

a)

True

b)

False

53.

This engines is the first type of gas turbine engine invented.

a)

Turbojet

b)

Turboprop

c)

Turbofan

d)

Turboshaft

54.

What is the main function of the ailerons?

a)

Rolling left and right

b)

Pitching up and down

c)

Yawing left and right

d)

Allows aircraft to hover

55.

Where is the aircraft controlled from?

a)

Cabin

b)

Cockpit

c)

Undercarridge

d)

Cowling

56.

Where is the winglet located?

a)

At the wing tip

b)

On the horizontal stabilizer

c)

On the vertical stabilizer

d)

In front of the wing

57.

What is the most commonly used aircraft material?

a)

Alluminium Alloy

b)

Titanium

c)

Carbon Fibre Reinforced Polymer

d)

Stainless Steel

58.

What is the principle behind lift in flight?

a)

Bernoulli's principle

b)

Einstein's theory of relativity

c)

Newton's third law

d)

Archimedes' principle

59.

Explain Bernoulli's principle and its relation to flight.

a)

Bernoulli's principle states that as the speed of a fluid (such as air) increases, its pressure increases. This principle is related to flight because it explains how the shape of an airplane wing creates lift.

b)

Bernoulli's principle states that as the speed of a fluid (such as air) increases, its pressure remains constant. This principle is related to flight because it explains how the shape of an airplane wing creates lift.

c)

Bernoulli's principle states that as the speed of a fluid (such as air) increases, its pressure increases. This principle is related to flight because it explains how the weight of an airplane affects its lift.

d)

Bernoulli's principle states that as the speed of a fluid (such as air) increases, its pressure decreases. This principle is related to flight because it explains how the shape of an airplane wing creates lift.

60.

What factors affect the amount of lift generated by an aircraft?

a)

Pilot's experience, brand of the aircraft, time of day

b)

Type of fuel used, altitude of the aircraft, length of the runway

c)

Shape and size of wings, angle of attack, airspeed, air density, lift coefficient

d)

Weight of the aircraft, color of the aircraft, number of passengers on board

61.

How does drag affect the motion of an aircraft?

a)

Drag opposes the forward motion of an aircraft.

b)

Drag causes the aircraft to move sideways.

c)

Drag has no effect on the motion of an aircraft.

d)

Drag helps to propel the aircraft forward.

62.

What is air resistance and how does it relate to drag?

a)

Air resistance is the force that opposes the motion of an object through the air, while drag is a type of air resistance that acts in the opposite direction of the object's motion.

b)

Air resistance is the force that attracts objects to the ground, while drag is a type of air resistance that acts in the opposite direction of the object's motion.

c)

Air resistance is the force that propels an object through the air, while drag is a type of air resistance that acts in the same direction as the object's motion.

d)

Air resistance is the force that causes objects to float in the air, while drag is a type of air resistance that acts in the same direction as the object's motion.

63.

What are the different types of drag experienced by an aircraft?

a)

thrust drag, lift drag, and form drag

b)

friction drag, lift drag, and pressure drag

c)

parasitic drag, induced lift, and vortex drag

d)

parasite drag, induced drag, and wave drag. This one is the correct answer :)

64.

What is thrust and how does it propel an aircraft forward?

a)

Thrust is the force that propels an aircraft backward.

b)

Thrust is the force that propels an aircraft upward.

c)

Thrust is the force that propels an aircraft sideways.

d)

Thrust is the force that propels an aircraft forward.

65.

Explain the principle of propulsion in flight.

a)

Propulsion in flight is achieved by reducing air resistance, creating a forward thrust.

b)

Propulsion in flight is achieved by flapping wings rapidly, creating a forward thrust.

c)

Propulsion in flight is achieved by expelling a high-speed jet of gases forward, creating a backward thrust.

d)

Propulsion in flight is achieved by expelling a high-speed jet of gases backward, creating a forward thrust.

66.

What are the main sources of thrust in aircraft?

a)

jet engines or propellers

b)

cockpit

c)

wings

d)

landing gear

67.

How does weight affect the flight of an aircraft?

a)

Weight has no effect on the flight of an aircraft.

b)

Weight only affects the fuel efficiency of an aircraft.

c)

Weight increases the maneuverability of an aircraft.

d)

Weight affects the lift, drag, maneuverability, and fuel efficiency of an aircraft.

68.

What is the role of gravity in flight?

a)

Gravity has no role in flight.

b)

Gravity causes the aircraft to float in the air.

c)

Gravity keeps the aircraft grounded and counteracts the lift generated by the wings.

d)

Gravity helps to propel the aircraft forward.

69.

How is flight control achieved in an aircraft?

a)

Through the use of magic spells.

b)

By telepathically communicating with birds.

c)

By harnessing the power of unicorns.

d)

Through the use of aerodynamic surfaces controlled by the pilot.

70.

What are the primary flight controls and their functions?

a)

The primary flight controls are the ailerons, elevator, and rudder.

b)

The primary flight controls are the landing gear, brakes, and reverse thrust.

c)

The primary flight controls are the throttle, flaps, and spoilers.

d)

The primary flight controls are the altimeter, airspeed indicator, and vertical speed indicator.

71.

What is the pitch of a plane and how does it affect the flight?

a)

Pitch is the vertical movement of the aircraft, it has no effect on the flight.

b)

Pitch is the horizontal movement of the aircraft, it affects the direction of the flight.

c)

Pitch is the vertical movement of the aircraft, it affects the altitude of the flight.

d)

Pitch is the horizontal movement of the aircraft, it has no effect on the flight.

72.

How does the pitch of a plane change during takeoff and landing?

a)

The pitch decreases during takeoff and increases during landing.

b)

The pitch increases during takeoff and decreases during landing.

c)

The pitch remains constant during both takeoff and landing.

d)

The pitch decreases during both takeoff and landing.

73.

What controls are used to adjust the pitch of a plane?

a)

The ailerons and rudder are used to adjust the pitch.

b)

The elevators and ailerons are used to adjust the pitch.

c)

The elevators are used to adjust the pitch.

d)

The throttle and flaps are used to adjust the pitch.

74.

What is the yaw of a plane and how does it affect the flight?

a)

Yaw is the vertical movement of the aircraft, it has no effect on the flight.

b)

Yaw is the horizontal movement of the aircraft, it affects the direction of the flight.

c)

Yaw is the rotation of the aircraft around its vertical axis, it affects the direction of the flight.

d)

Yaw is the rotation of the aircraft around its horizontal axis, it has no effect on the flight.

75.

What controls are used to adjust the yaw of a plane?

a)

The ailerons and rudder are used to adjust the yaw.

b)

The elevator and ailerons are used to adjust the yaw.

c)

The rudder is used to adjust the yaw.

d)

The throttle and flaps are used to adjust the yaw.

76.

How does the yaw of a plane change during takeoff and landing?

a)

The yaw decreases during takeoff and increases during landing.

b)

The yaw increases during takeoff and decreases during landing.

c)

The yaw remains constant during both takeoff and landing.

d)

The yaw decreases during both takeoff and landing.

77.
What is the main control issue with Tail Dragger aircraft?
a)
Tail Dragger aircraft lean back
b)
They are funny looking 
c)
Visibility (poor cockpit view)
d)
Loud engines
78.

Which wing or wings are airfoils?

a)
b)
c)
79.

Which wing or wings are airfoils? (pick all that apply)

a)
b)
c)
d)
e)
80.

When the glider is flying like this which will generate lift? (pick all that apply)

a)
b)
c)
d)
e)
81.

Which wing or wings will generate lift when flying like this?

a)
b)
c)
82.

Which wing or wings will generate lift when flying like this?

a)
b)
c)
83.

When the glider is flying like this which will generate lift? (pick all that apply)

a)
b)
c)
d)
e)
84.

Which will have air flowing over the top of the wing faster than the bottom of the wing?

a)
b)
c)

All choices

d)

None of the choices

85.

Air strikes the airfoil wing below. Which is true?

a)

Air will travel over the top of the wing slower than the bottom of the wing generating upward lift

b)

Air will travel over the bottom of the wing slower than the top of the wing generating upward lift

c)

Air will travel over the top & bottom of the wing at the same speed. No lift is generated. But, less drag.

86.

Air strikes the airfoil wing below. Which is true?

a)

Air will travel over the top of the wing slower than the bottom of the wing generating upward lift

b)

Air will travel over the bottom of the wing slower than the top of the wing generating upward lift

c)

Air will travel over the top & bottom of the wing at the same speed. No lift is generated.

87.

Air gets deflected downward for which wing?

a)
b)
c)

Both wings

88.

Which wing or wings has an angle of attack? Pick all correct choices

a)
b)
c)
d)
89.

Which 2 are true?

a)

Lift is generated by this wing due to the angle of attack

b)

Lift is NOT generated by this wing due to the angle of attack

c)

Lift is generated due to the shape of the wing

d)

Lift is NOT generated due to the shape of the wing

90.

If this had a flat wing then which 2 would be true?

a)

Lift is generated by this wing due to the angle of attack

b)

Lift is NOT generated by this wing due to the angle of attack

c)

Lift is generated due to the shape of the wing

d)

Lift is NOT generated due to the shape of the wing

91.

Which 2 are true?

a)

Lift is generated by this wing due to the angle of attack

b)

Lift is NOT generated by this wing due to the angle of attack

c)

Lift is generated due to the shape of the wing

d)

Lift is NOT generated due to the shape of the wing

92.

Which 2 are true?

a)

Lift is generated by this wing due to the angle of attack

b)

Lift is NOT generated by this wing due to the angle of attack

c)

Lift is generated due to the shape of the wing

d)

Lift is NOT generated due to the shape of the wing

93.

Which 2 are true?

a)

The glider has lift due to the air moving over the top of the wing faster than the bottom of the wing

b)

The glider has lift due to the air moving over the bottom of the wing faster than the top of the wing

c)

The glider has lift due to air deflecting off the wing and going downward

d)

The glider has lift due to air deflecting off the wing and going upward

e)

The glider does not have lift due to the difference in speed of air over the top and bottom wing

94.

Which 2 are true?

a)

The glider has lift due to the air moving over the top of the wing faster than the bottom of the wing

b)

The glider has lift due to the air moving over the bottom of the wing faster than the top of the wing

c)

The glider has lift due to air deflecting off the wing and going downward

d)

The glider has lift due to air deflecting off the wing and going upward

e)

The glider does not have lift due to the difference in speed of air over the top and bottom wing

95.

Which 2 are true?

a)

The glider has lift due to the air moving over the top of the wing faster than the bottom of the wing

b)

The glider has lift due to the air moving over the bottom of the wing faster than the top of the wing

c)

The glider has lift due to air deflecting off the wing and going downward

d)

The glider has lift due to air deflecting off the wing and going upward

e)

The glider does not have lift due to the difference in speed of air over the top and bottom wing

96.

Which 2 are true?

a)

The glider has lift due to the air moving over the top of the wing faster than the bottom of the wing

b)

The glider has no lift from air going off the wing downward

c)

The glider has lift due to air deflecting off the wing and going downward

d)

The glider has lift due to air deflecting off the wing and going upward

e)

The glider does not have lift due to the difference in speed of air over the top and bottom wing

97.

Which 2 are true?

a)

The glider has lift due to the air moving over the top of the wing faster than the bottom of the wing

b)

The glider has no lift from air going off the wing downward

c)

The glider has lift due to air deflecting off the wing and going downward

d)

The glider has lift due to air deflecting off the wing and going upward

e)

The glider does not have lift due to the difference in speed of air over the top and bottom wing

98.

What mechanism was used to aid a human being in successfully flying?

a)

Hot air balloon

b)

Kite

c)

Glider

d)

Propeller driven airplane

99.

Where did flight by balloon first occur?

a)

England

b)

United States

c)

France

d)

China

100.

What do aerodynamic characteristics affect?

a)

speed

b)

motion

c)

type of aircraft

d)

aircraft landings

101.

What do you need for an object to fly?

a)

an engine

b)

a force to lift it

c)

gasoline

d)

wings

102.

Which edge of an airfoil cuts through the air ahead?

a)

chord

b)

camber

c)

leading

d)

trailing

103.

What did aircraft designers use to test models of new aircraft?

a)

Wind Tunnels

b)

Airfoils

c)

Chords

d)

Camber

104.

What laws are fundamental to our understanding of flight today?

a)

Questś laws of airlift

b)

Newtonś laws of motion

c)

Paineś laws of aerodynamics

d)

Wrightś laws of flight

105.

What is sometimes called the law of inertia?

a)

Newtonś First Law of Motion

b)

Newtonś Second Law of Motion

c)

Newtonś Third Law of Motion

d)

Bernoulliś Principle

106.

When does an airplane take off and fly?

a)

when the air traffic controller gives the okay and the pilot turns on the engine

b)

when the outside force moves the aircraft fast enough to provide enough lifting force

c)

when the engine is at full throttle and provides enough power for flight to occur

d)

when all system checks are completed and the aircraft’s wings are in proper position

107.

According to Newton’s second law of motion, an object’s acceleration is proportional to the sum of all forces exerted on it. How can you write this law?

a)

force(f) = mass(m) + acceleration(a) or F=m+a

b)

force(f) = acceleration(a) / mass(m) or F=a/m

c)

force(f) = mass(m) x acceleration(a) or F=ma

d)

force(f) = acceleration(a) – mass(m) or F=a–m

108.

It took centuries of experimenting, of trying and failing, before people understood how things fly. They slowly had to develop a (a)   of flight.

109.

Relative wind has both a ____________and a ___________.

(a)  

110.

By changing the ________ ________ ________of an airplane, you change the amount of lift a wing produces.

(a)  

111.

The critical angle of attack is somewhere around (a)   degrees in most aircraft.

112.

Chinese Emperor Gao Yang forced prisoners to attach themselves to balloons and leap from a high tower.

a)

True

b)

False

113.

While riding in a car, you would slam into the windshield if you weren’t wearing your seatbelt. This is sometimes called the law of inertia.

a)

True

b)

False

114.

In general, when an aircraft is in flight, the relative wind blows in nearly the exact opposite direction to the plane’s direction.

a)

True

b)

False

115.

Name the elements of an airfoil

a)

Camber

b)

Leading edge

c)

Chord

d)

All of the above

116.

State Newtonś First Law of Motion.

(a)  

117.

A stall can occur at any airspeed or pitch attitude.

a)

True

b)

False

118.

How can adding devices to a wing negatively affect the plane?

a)

Could increase weight

b)

Makes it look weird

c)

Make it more mechanically complex

d)

Could damage the plane

119.

Aircrafts designed to fly slowly typically have ____ airfoils, while aircrafts designed to fly fast have ____ airfoils.

a)

Thick, Thin

b)

Thin, Thick

c)

Weak, Strong

d)

Strong, Weak

120.

The very thin layer of air lying over the surface of the wing is called the ____

a)

Laminar Layer

b)

Boundary Layer

c)

Chord

d)

Turbulent layer

121.

Conventional airfoils: generally are the thickest at __ percent of the chord

a)

30%

b)

50%

c)

25%

d)

10%

122.

The most common high-lift device found on a wing is the ____.

a)

Slat

b)

Airfoil

c)

Flap

d)

Slot

123.

This gas is found in the stratosphere where it helps protect us from UV radiation.

a)

ozone

b)

oxygen

c)

nitrogen

d)

carbon dioxide

124.

The Earth's atmosphere is divided into five layers. In which layer does all life exist?

a)

exosphere

b)

mesosphere

c)

stratosphere

d)

troposphere

125.

Almost 99% of Earth's atmosphere is made up of two gases. What are the two gases and the percents of each?

a)

21% oxygen and 78% nitrogen

b)

21% water vapor and 78% oxygen

c)

21% nitrogen and 78% oxygen

d)

21% carbon dioxide and 78% oxygen

126.

Which gas makes up the largest component of the Earth’s atmosphere?

a)

argon (Ar)

b)

oxygen (O2)

c)

nitrogen (N2)

d)

carbon dioxide (CO2)

127.

Normal atmospheric pressure at sea level

a)

1013 millibar

b)

1012 millibar

c)

1000 millibar

128.
What is altitude?
a)
how much something weighs
b)
the distance above sea level
c)
how big something is
d)
how far away something is
129.

Angle of attack is

a)

Angle formed by camber line to the relative air flow

b)

Angle formed by leading edge to the relative air flow

c)

Angle formed by chord line to the relative air flow

d)

Angle formed by camber to the leading edge

130.

The maximum distance between the upper and lower surface of an airfoil is

a)

Chord

b)

Maximum Camber

c)

Camber

d)

Maximum thickness

131.

Angle of incidence is

a)

The angle formed by the leading edge and the relative airflow

b)

The angle between the chord line and any of the reference axis along the airplane

c)

The angle formed by the chord line and the relative airflow

d)

None of the above

132.

This is the angle of?

a)

Angle Of Incidence

b)

Angle Of Attack

c)

Angle Of Inclination

133.

A symmetrical airfoil has zero?

a)

Chord

b)

Lift

c)

Camber

d)

Angle of Attack

134.

Which type of fluid flow is smooth, and predictable?

a)

Turbulent

b)

Viscous

c)

Laminar

d)

Inertial

135.

What kind of flow can be described as disorganized and chaotic?

a)

laminar

b)

critical

c)

turbulent

d)

none of the above

136.

Turbulent flow is characterized by _______

a)

low flow rates

b)

irregular and chaotic flow

c)

regular streamlines

d)

constant speed

137.

what will happen to the aircraft if all forces are equal?

a)

accelerate

b)

change altitude

c)

remain steady

138.

lift can be explained using two principles. one of them is:

a)

boyle's law

b)

bernoulli's principle

c)

charle's law

d)

hooke's law

139.

skin friction drag

a)

surface texture

b)

shape

c)

where different parts of the aircraft join

140.

When you throw a paper plane in the air, you are giving the plane a push to move forward. That push is a type of force called_____________?

a)

Gravity

b)

Force

c)

Thrust

d)

Drag

141.

The slat and flap increase downwash and the ____ to increase lift.

a)

simscale

b)

upwash

c)

pressure

d)

wing area

142.

To make a plane nosedive, pilots point the elevator ___.

a)

up

b)

down

c)

sideways

d)

everywhere

143.

How do vortices produce induced drag?

a)

Air Flows above the tip and comes back in a downwash behind the wing, pulling down and back on the aircraft

b)

A greater air pressure is created on the wing tops than on the bottom

c)

Air passes over an aircraft's parts, hits one of these objects, then rejoins when it gets to the other side

d)

Airplane surfaces meet at sharp angles, creating different air currents that collide and create drag

144.

Choose the odd word

a)

EMPENNAGE

b)

RUDDER

c)

ELEVATOR

d)

AILRON

145.

The reduction of speed to the point where the wing stops producing lift

a)

STALL

b)

HAZARD

c)

MULTI-ENGINE

d)

THRUST

146.

The ________ is the compartment where the pilot sits while flying the aircraft

a)

COCKPIT

b)

CABIN

c)

WING

d)

AISLE

147.

According to Newton's second law of motion, an object's acceleration is proportional to the sum of all forces exerted on it. How can you write this law?

a)

force (f) = mass(m) + acceleration (a) or F=m+a

b)

force (f) = acceleration(a) / mass(m) or F=a/m

c)

force(f) = mass(m) x acceleration(a) or F=ma

d)

force(f) = acceleration(a) - mass(m) or F=a-m

148.

What changes the angle of attack on a plane's wings?

a)

knot

b)

pitch

c)

relative wind

d)

air pressure

149.

What 4 Forces must you understand in order to safely fly an aircraft?

a)

lift, weight, thrust, and drag

b)

lift, acceleration, mass, and drag

c)

weight, acceleration, velocity, and drag

d)

acceleration, lift, thrust, and velocity

150.

What does the magnitude or size of an aircraft's weight depend on?

a)

The aircraft's weight

b)

The aircraft's mass

c)

The aircraft's dimensions

d)

The aircraft's thrust

151.

What word best completes this sentence? "You can overcome weight with __________."

a)

the angle of attack

b)

lift

c)

thrust

d)

velocity

152.

What does it mean to "trim" the aircraft?

a)

streamline

b)

decrease lift

c)

increase velocity

d)

balance

153.

What does drag result from?

a)

Pressure pushing on an aircraft

b)

Air resisting an aircraft's forward motion

c)

Gravity working to slow an aircraft

d)

Equilibrium forces

154.

What do you need to do to maintain a constant airspeed?

a)

Decrease thrust

b)

Decrease lift

c)

Increase angle of attack

d)

Maintain equal lift and weight

e)

Maintain equal thrust and drag

155.
CG of the aircraft is usually ?
a)
ahead of the center of lift
b)
behind the center of lift
c)
in the center of the aircraft
d)
in the back
156.
What is an Airfoil?
a)
An airfoil is a wing that generates drag
b)
airfoil is a surface that produces pitch
c)
an airfoil is a surface that produces LIFT
d)
an airfoil is the air the flows over the wing
157.
The wing is said to have a chord line. The imaginary line that runs from?
a)
the leading edge to the trailing edge
b)
the front of the plane, to the back of the plane
c)
the front of the propeller to the back
d)
The side of the wing
158.
The angle of attack- is the angle between
a)
the chord line and the back of the airplane
b)
the chord line and the lift
c)
the chord line and the relative wind
d)
the wind and the angle of the nose
159.
The relative wind is 
a)
the wind that hits you from behind
b)
the ram air that hits you from forward motion
c)
cross wind
d)
wind pipe
160.
Parasite Drag is produced with ?
a)
Parts that stick inside the airplane
b)
parts that produce lift
c)
Thrust is the by-product creating drag
d)
anything that sticks out of the airplane
161.
a wing will produce lift only, when?
a)
air flows over the wing
b)
air flows in the top only
c)
air under only
d)
air sucks
162.

Complete the saying: "A good landing is...., a great landing is...."

a)

Any landing on a runway, any landing on time

b)

Any landing the passengers clap, any landing you get compliments

c)

Any landing you can walk away from, any landing u can use the airplane again

d)

Any landing done by the pilot, any landing done by the autopilot

163.

Complete the saying: ".... from bottle to throttle"

a)

1 hour

b)

30 minutes

c)

8 hours

d)

24 hours

164.

This company is based in which country?

a)

USA

b)

Germany

c)

France

d)

Brazil

165.

birds have...

a)

hollow bones

b)

feathers

c)

wings shaped like airfoils

d)

strong pectoral muscles

166.
According to Bernoulli’s principle, when air flows over the curved upper surface of a wing, it ___________.
a)
slows down
b)
lifts
c)
speeds up
d)
drags
167.
What does the difference in air pressure above and below the wing depend on?
a)
wing shape
b)
wing weight
c)
wing material
d)
wind conditions
168.
What changes the angle of attack on a plane’s wings?
a)
knot
b)
pitch
c)
relative wind
d)
air pressure
169.
What does changing the angle of attack result in?
a)
altering relative wind
b)
altering the amount of lift a wing produces
c)
altering the speed at which the plane flies
d)
altering maneuverability
170.
Why is the critical angle of attack especially dangerous when an aircraft is close to the ground?
a)
It is the point at which an aircraft stalls
b)
It is the point at which an aircraft may land
c)
It is the point at which an aircraft needs lift
d)
It is the point at which an aircraft needs speed
171.
Built the first hot-air balloon.
a)
Sir Isaac Newton
b)
Daniel Bernoulli
c)
Montgolfier brothers
d)
Wright brothers
e)
Chuck Yeager
172.
Formulated an important principle regarding air pressure.
a)
Sir Isaac Newton
b)
Daniel Bernoulli
c)
Montgolfier brothers
d)
Wright brothers
e)
Chuck Yeager
173.

An object is falling downward through Earth's atmosphere. In which direction is the air resistance force?

a)

Down

b)

Up

c)

Around the object

d)

Through the object

174.

An airplane flies east at 400 km/hr. In which direction is the air resistance force acting upon the airplane?

a)

East

b)

West

c)

Up

d)

Down

175.

Which best describes why a falling object will reach its terminal velocity?

a)

Gravity force is equal and opposite air resistance force.

b)

Air resistance force is equal and opposite the freefall velocity.

c)

Gravity force is equal and opposite the object's mass.

d)

The object's mass is equal and opposite the gravity force.

176.

Read the following passage from “To Fly.”

We did, however, ultimately learn to fly because of the technological ingenuity afforded by our human brains. And of course, while birds can fly, they are nonetheless stuck with bird brains. But this self-aggrandizing line of reasoning is somewhat flawed, because it ignores all the millennia that we were technologically flightless. 

The author says that this line of reasoning is flawed because we may be smarter than birds, yet we failed to fly until very recently.

a)

True

b)

False

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8th Grade Physical Science Review

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8th Grade Physical Science Review

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8th - 11th Grade