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Physics Unit Test Review

Total questions: 96

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

When two equal forces act in opposite directions on an object, they are called ______________________.

a)

frictional force

b)

balanced force

c)

centripetal force

d)

gravitational force

2.

Distance divided by time is how this is calculated.

a)

Average Speed

b)

Instant Speed

c)

Acceleration

3.

The resistance of an object to any change in its motion is called ______________________.

a)

inertia

b)

friction

c)

gravity

d)

weight

4.

According to Newton’s second law of motion, force is equal to mass times ______________________.

a)

inertia

b)

weight

c)

acceleration

d)

direction

5.
What law is best described by inertia?
a)
1st
b)
2nd
c)
3rd
6.

The picture is an example of Newton's...

a)

1st Law

b)

2nd Law

c)

3rd Law

7.

The picture is an example of Newton's...

a)

1st Law

b)

2nd Law

c)

3rd Law

8.

When an unbalanced force acts on an object, the force ______________________.

a)

changes the motion of the object

b)

is cancelled by another force

c)

does not change the motion of an object

d)

is equal to the weight of the object

9.
"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
10.
Any push or pull on an object.
a)
force
b)
velocity 
c)
inertia
d)
momentum
11.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
12.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
13.

Suppose you walked 80 meters in 40 seconds. What is your average speed?

a)

80 n/s

b)

2 m/s

c)

1 m/s

d)

0.5 m/s

14.

Suppose you are running at 8 mph for a race but then encounter a nice downhill. Which of the following is a likely instant speed during any part of the downhill portion of the race?

a)

0 mph

b)

8 mph

c)

9.5 mph

d)

7 mph

15.

How fast an object is traveling in a certain direction is the definition of __________.

a)

speed

b)

velocity

c)

acceleration

d)

position

16.

Which section shows an object getting faster?

a)

A only

b)

B only

c)

A and C

d)

D

e)

C and D

17.

Which section shows an object decreasing in speed?

a)

A

b)

B

c)

C

d)

D

18.

During which time interval is the object not moving?

a)

9:00 to 11:00

b)

11:00 to 12:00

c)

12:00 to 12:30

d)

12:30 to 14:00

19.
Wind pushes a toy sailboat across a pond. The boat moves in a straight path. What is changing?
a)
the boat’s direction
b)
the boat’s path
c)
the wind’s direction
d)
the boat’s position
20.
The position of a runner in a race changes as time passes. What could a reference point to describe the change in position? 
a)
the starting line
b)
the runner’s speed
c)
the runner’s right foot
d)
another runner
21.
Force = Mass x Acceleration
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
22.

When an object’s distance from another object is changing,

a)

it is in motion.

b)

it is speeding.

c)

it has a high velocity.

d)

it is accelerating.

23.

Distance and direction of an object's change in position from a starting point

a)

displacement

b)

distance

c)

motion

d)

reference point

24.

Which form of energy do windmills (molinos) use to generate electricity?

a)

Thermal energy

b)

Light energy

c)

Kinetic energy

d)

Gravitational potential energy

25.

Which form of energy do panels use to generate electricity?

a)

Kinetic energy

b)

Thermal energy

c)

Sound energy

d)

Light energy

26.

What type of energy is being transformed when you use a hairdryer?

a)

From thermal energy to electrical energy

b)

From electrical energy to kinetic energy

c)

From electrical energy to thermal energy

d)

From kinetic energy to thermal energy

27.

What type of energy is being transformed when you use a flashlight?

a)

From chemical energy to electrical energy

b)

From electrical energy to thermal energy

c)

From chemical energy to light energy

d)

From electrical energy to light energy

28.

Energy can't be created or destroyed. It can only be transfered

a)

True

b)

False

29.

The energy associated with movement is called...

a)

Chemical energy

b)

Thermal energy

c)

Sound energy

d)

Kinetic energy

30.

The tendency for a material to oppose the flow of electrons is _____.

a)

current

b)

resistance

c)

conductor

d)

voltage

31.

Items with opposite charges _____ each other.

a)

attract

b)

repel

c)

move

d)

none of the above

32.

Items with like charges _____ each other.

a)

attract

b)

repel

c)

move

d)

none of the above

33.

Clothes clinging together and lightning are examples of _____.

a)

current electricity

b)

circuit electricity

c)

alternating electricity

d)

static electricity

34.

Resistance is measured in a unit called _____.

a)

ampere

b)

ohm

c)

volt

d)

coulomb

35.

Electric current is measured in a unit called _____.

a)

ampere

b)

ohm

c)

volt

d)

coulomb

36.

Is the symbol for _____.

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

37.

Is the symbol for _____.

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

38.

A good conductor is a material that does not allow electricity to flow through it.

a)

True

b)

False

39.

In a series circuit, all parts of the circuit are connected in a single path.

a)

True

b)

False

40.

Select the items needed to have a complete circuit.

a)

Energy source (battery)

b)

Wires

c)

Energy user (lightbulb)

d)

Voltmeter

e)

Switch

41.

Which of the following are examples of conductors?

a)

Copper

b)

Plastic

c)

Glass

d)

Aluminum foil

e)

Pencil lead

42.

What are the components of the electromagnets?

a)

battery, wire and bulb

b)

battery , copper wire and paper clips

c)

battery, copper wire and iron nail

d)

battery, wire and aluminum

43.

What would happen if you took one end of the wire off the battery?

a)

The nail will be a magnet.

b)

The nail would no longer be a magnet

c)

Nothing will happened.

d)

The nail will heats up.

44.

Which part of the electromagnets turned into a magnet when electricity flows through a coiled wire?

a)

Battery

b)

Copper wire

c)

Iron Nail

d)

Bulb

45.

Electric currents produce _____________

a)

electron clouds

b)

magnetic fields

c)

sound waves

46.

How can the strength of an electromagnet be increased? (mark all that apply)

a)

increase the current flowing through the coil

b)

increase the number of coils

c)

add an amplifier to it

d)

put iron core inside the coil

47.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
48.

What type of magnet that can turned on and off?

a)

electromagnet

b)

permanent magnet

c)

electricity

d)

battery

49.
1. A book weighing 1.0 newton is lifted 2 meters.  How much work was done?
a)
2 J
b)
0.5 J
50.
A force of 15 newtons is used to push a box along the floor a distance of 3 meters.  How much work was done?
a)
3 J
b)
45 J
51.
It took 50 joules to push a chair 5 meters across the floor. With what force wast the chair pushed?
a)
250N
b)
10N
52.
A young man exerted a force of 9,000 newtons on a stalled car but was unable to move it.  How much work was done?
a)
9,000 J
b)
0 J= No work
53.
What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?
a)
56, 250 watts
b)
250 watts
54.

a simple machine consisting of a bar that pivots at a fixed point, called the fulcrum

a)

lever

b)

inclined plane

c)

wedge

d)

pulley

55.

a simple machine that is a straight, slanted surface

a)

inclined plane

b)

compound machine

c)

wheel and axle

d)

wedge

56.

a simple machine consisting of a bar that pivots at a fixed point, called the fulcrum

a)

lever

b)

inclined plane

c)

wedge

d)

pulley

57.

a simple machine that is a straight, slanted surface

a)

inclined plane

b)

compound machine

c)

wheel and axle

d)

wedge

58.

a simple machine consisting of a grooved wheel that holds a rope or a cable; a load is attached to one end and an input force is applied to the other end

a)

pulley

b)

screw

c)

compound machine

d)

inclined plane

59.

a double inclined plane that moves

a)

wedge

b)

inclined plane

c)

wheel and axle

d)

pulley

60.

an inclined plan that is wrapped in a spiral

a)

screw

b)

inclined plane

c)

wedge

d)

pulley

61.

a simple machine consisting of two circular objects of different sizes

a)

wheel and axle

b)

pulley

c)

compound machine

d)

lever

62.

machines that are made from two or more simple machines

a)

lever

b)

compound machine

c)

inclined plane

d)

wedge

63.
a)

lever

b)

wedge

c)

wheel and axle

d)

inclined plane

64.
a)

inclined plane

b)

wedge

c)

lever

d)

pulley

65.
a)

wedge

b)

inclined plane

c)

screw

d)

pulley

66.
a)

screw

b)

wheel and axle

c)

pulley

d)

inclined plane

67.
a)

wheel and axle

b)

screw

c)

pulley

d)

lever

68.
a)

pulley

b)

inclined plane

c)

screw

d)

wheel and axle

69.

Which type of waves have the longest wavelength?

a)

Visible light

b)

Radio waves

c)

X-rays

d)

Gamma-Rays

70.

What is frequency measured in?

a)

Milliseconds

b)

Miles

c)

Hertz

d)

Kilograms

71.

What is the number of complete waves passing a fixed point in a given amount of time?

a)

Amplitude

b)

Intensity

c)

Wavelength

d)

Frequency

72.

What are the two types of waves?

a)

longitudinal and transverse

b)

sound and light

73.

Which of the following can waves transfer energy through?

a)

solid

b)

liquid

c)

gas

d)

empty space

e)

all of the above

74.

What do all waves transfer?

a)

Matter

b)

Heat

c)

Electricity

d)

Energy

75.

Wavelengths are usually measured in ....

a)

seconds

b)

Hz

c)

inches

d)

meters

76.

Shorter wave lengths can carry more energy. Which of these probably carries the MOST energy:

a)

Infrared light

b)

Visible light

c)

X-rays

d)

UV light

77.

What is the distance between the calm sea and the highest wave called?

a)

Wave

b)

Frequency

c)

Amplitude

d)

Magnitude

78.

What does #1 represent?

a)

Period

b)

Frequency

c)

Wavelength

d)

Amplitude

79.

What does #2 represent?

a)

Period

b)

Frequency

c)

Wavelength

d)

Amplitude

80.
Sound moves in a _________.
a)
Transverse wave
b)
Longitudinal wave
81.
How is sound produced?
a)
By the vibration of particles
b)
By the transfer of particles 
82.
Area of a longitudinal wave where particles are CLOSE together.
a)
Compression
b)
Rarefaction
83.
Area of a longitudinal wave where particles are APART. 
a)
Compression
b)
Rarefaction
84.
Sound travels FASTEST through which of these materials?
a)
Air
b)
Empty space
c)
Metal
d)
Water
85.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
86.
Measure of how high or low a sound is
a)
amplitude
b)
compression
c)
speed of sound
d)
pitch
87.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
88.
An object that does not vibrate cannot produce
a)
sound
b)
light
c)
heat
d)
electricity
89.

What unit is used to measure current?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

90.

What unit is used to measure resistance?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

91.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

92.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

93.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
94.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
95.

What is the formula for ohms law?

a)

1+2=3

b)

R X E = I

c)

V =I x R

d)

E= MC squared

96.

What unit is used to measure the voltage?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

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