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Aerospace Engineering, Ch.7 Vocabulary Quiz: ACE

Total questions: 44

Worksheet time: 22mins

Name
Class
Date
1.

Which statement best describes lift?

a)

A. A sideways force helping an aircraft turn

b)

B. The upward force that opposes gravity

c)

C. The backward force caused by air resistance

d)

D. The force produced by burning fuel

2.

What is weight in relation to aircraft flight?

a)

Force produced by the engines

b)

Upward force on the wings

c)

Downward force caused by gravity acting on mass

d)

Air pressure beneath the wings

3.

What does thrust do?

a)

Slows the aircraft down

b)

Pushes the aircraft upward

c)

Propels the aircraft forward

d)

Balances the aircraft’s weight

4.

Drag is best described as—

a)

The resistance that opposes forward motion

b)

The force that pulls aircraft downward

c)

Air pushing upward on the wings

d)

Rotational force around the vertical axis

5.

An airfoil is—

a)

A type of satellite

b)

A shape designed to produce lift

c)

A rocket engine nozzle

d)

A meteorology instrument

6.

Bernoulli’s Principle states—

a)

Increasing speed decreases pressure

b)

Every action has an opposite reaction

c)

Objects in motion stay in motion

d)

Pressure increases when air slows down

7.

Which statement reflects Newton’s Third Law?

a)

Air pressure changes with altitude

b)

Faster air creates low pressure

c)

Action equals opposite reaction

d)

Energy cannot be created or destroyed

8.

What is downwash?

a)

Airflow that increases drag

b)

Downward air behind a wing due to lift

c)

Air moving sideways off the wingtips

d)

Turbulence caused by clouds

9.

The angle of attack is the angle between—

a)

The tail and the nose

b)

Chord line and oncoming airflow

c)

Wingtip and fuselage

d)

Engine exhaust and thrust direction

10.

Parasitic drag increases when—

a)

Speed increases

b)

Speed decreases

c)

The angle of attack is zero

d)

The aircraft climbs

11.

Induced Drag is caused by:

a)

the generation of lift

b)

aircraft weight

c)

engine thrust

d)

air temperature

12.

Induced drag is strongest when—

a)

The aircraft is at high speed

b)

The aircraft is at low speed

c)

The aircraft is banking

d)

The aircraft is descending

13.

The purpose of winglets is—

a)

Reduce drag and improve fuel efficiency

b)

Add stability during landing

c)

Increase engine thrust

d)

Protect wings from lightning

14.

Pitch refers to—

a)

Rotation around the vertical axis

b)

Up/down nose motion

c)

Left/right turning motion

d)

Wing tilting motion

15.

Roll refers to—

a)

Tilting of the wings

b)

Rotation of the tail

c)

Upward acceleration

d)

Turning left or right

16.

Yaw means rotation—

a)

Around the side-to-side axis

b)

Around the front-to-back axis

c)

Around the vertical axis

d)

Inside the fuel tank

17.

Horizontal Stabilizers These control—

a)

Yaw

b)

Roll

c)

Pitch

d)

Thrust

18.

Vertical Stabilizers prevent unwanted—

a)

Pitching

b)

Rolling

c)

Yawing

d)

Drag

19.

Supersonic flight is faster than—

a)

100 mph

b)

Sound (Mach 1)

c)

Light

d)

Standard wind speed

20.

If a rocket's thrust-to-weight ratio is greater than 1—

a)

It cannot lift off

b)

It will lift off

c)

It will hover

d)

It will fall to Earth

21.

Liquid propulsion systems use—

a)

Solid propellant

b)

Liquid fuel and oxidizer

c)

Solar panels

d)

Carbon composites

22.

Fill in the blank: Carbon composites are materials made from ________ and carbon fibers.

a)

resin

b)

plastic

c)

metal

d)

glass

23.

Carbon composites are—

a)

Heavy metals

b)

Weak materials

c)

Lightweight but strong materials

d)

Used only in cars

24.

Liquid-Fueled Rockets These rockets burn—

a)

Kerosene only

b)

Solid powder fuel

c)

Hydrogen and oxygen

d)

Methane only

25.

A limitation of solid-fueled rockets is that—

a)

They are too heavy to launch

b)

They cannot be restarted once lit

c)

They burn too slowly

d)

They require liquid oxygen

26.

Boosters provide—

a)

Drag during landing

b)

Extra thrust at launch

c)

Electricity for systems

d)

Pilot life support

27.

Thermal control systems protect spacecraft from—

a)

Solar panels

b)

Radio waves

c)

Extreme heat and cold

d)

Gravity

28.

Radiators on spacecraft—

a)

Generate thrust

b)

Release excess heat

c)

Store fuel

d)

Control pitch

29.

Thermal blankets protect spacecraft by—

a)

Storing heat

b)

Insulating from temperature extremes

c)

Creating lift

d)

Improving drag

30.

RTGs generate electricity using—

a)

Solar power

b)

Chemical reactions

c)

Radioactive decay heat

d)

Magnetic fields

31.

Attitude control manages—

a)

Speed

b)

Direction an object points

c)

Fuel mixture

d)

Crew oxygen levels

32.

Orbital mechanics studies—

a)

Weather patterns

b)

How objects move under gravity in space

c)

How rockets burn fuel

d)

The structure of satellites

33.

Satellites are—

a)

Natural moons

b)

Artificial objects placed in orbit

c)

Asteroids

d)

Atmospheric balloons

34.

Geostationary satellites—

a)

Orbit Earth once every hour

b)

Stay fixed over one spot

c)

Fly randomly across the sky

d)

Orbit in Low Earth Orbit

35.

LEO satellites orbit—

a)

At less than 50 km

b)

Between 160–2,000 km

c)

Only above 40,000 km

d)

Inside the atmosphere

36.

Starlink is—

a)

A NASA rover

b)

A group of weather balloons

c)

A LEO satellite network providing internet

d)

A new rocket engine

37.

MEO satellites are commonly used for—

a)

Weather forecasting

b)

GPS navigation

c)

Internet gaming

d)

Deep space missions

38.

GNSS refers to—

a)

Space telescopes

b)

Navigation satellite systems

c)

Rocket fuel tanks

d)

Air-to-air communication

39.

Uplink means sending signals—

a)

From satellite to Earth

b)

From Earth to satellite

c)

Between rockets

d)

From GPS to airplanes

40.

Downlink means sending signals—

a)

From Earth to satellite

b)

From satellites to Earth

c)

Between satellites

d)

From aircraft to spacecraft

41.

C-Band refers to—

a)

1–2 GHz

b)

4–8 GHz

c)

20–30 GHz

d)

50–60 GHz

42.

Ku-Band is used for—

a)

Weather balloons

b)

Satellite TV and data

c)

Rocket telemetry

d)

Nuclear power

43.

Ka-Band allows—

a)

Slow but reliable connections

b)

Faster data transfer but more weather interference

c)

No signal delay

d)

Only military communication

44.

GPS provides—

a)

Weather predictions

b)

Location and time data

c)

Nuclear detection

d)

Engine diagnostics

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