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IAPS Semester 2 Practice Test (2023)

Total questions: 85

Worksheet time: 4hrs 15mins

Name
Class
Date
1.
Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
a)
Low mass and low height
b)
Low mass and high height
c)
High mass and high height
d)
High mass and low height
2.
Which statement most accurately describes the Law of Conservation of Energy?
a)
Energy can not be created or destroyed but it can change from one type to another.
b)
Energy is created from the Earth and is destroyed when we use it.
c)
Energy should be saved (conserved) for use in the future.
d)
All forms of energy can be classified as either potential or kinetic.
3.
The efficiency of an average gasoline powered car is about 20%. This means,
a)
The gas tank needs to be 20% filled with gasoline for motion.
b)
The car uses 80% of the energy stored in the gasoline for motion.
c)
The car uses 20% of the energy stored in the gasoline for motion.
d)
The car wastes 20% of the energy stored in the gasoline.
4.
When you open the door to a refrigerator for a minute, what happens?
a)
Thermal energy in the refrigerator is transferred to the air outside the refrigerator.
b)
Thermal energy in the air outside the refrigerator is transferred to the inside of the refrigerator.
c)
The temperature of the air inside the refrigerator decreases.
d)
The temperature of the air just outside the refrigerator increases.
5.
Which list consists of only renewable energy sources?
a)
solar, nuclear, coal, wind
b)
wind, solar, hydro, tidal
c)
nuclear, petroleum, wind, hydro
d)
petroleum, tidal, solar, biomass
6.
Cory noticed that the hood of the car was hot after driving it for a while. What energy transformation was she noticing?
a)
chemical energy ➞ thermal energy
b)
thermal energy ➞ motion (kinetic)
c)
temperature energy ➞ braking energy
d)
motion (kinetic) ➞ thermal energy
7.
The following methods will melt an ice cube quickly, except
a)
hold it in your hand and change hands when one hand gets cold
b)
put it in a glass of room temperature water
c)
put it in an insulating container
d)
break it into pieces and warm up the pieces
8.
Is an incandescent light bulb more or less energy efficient than a fluorescent one?
a)
more 
b)
less
c)
they have the same efficiency 
d)
it is impossible to tell
9.
Solar energy is free energy from the sun, so why is it not used more as an energy source?
a)
equipment for collecting solar energy is expensive 
b)
equipment is not efficient 
c)
not all areas of the country receive a lot of sunlight
d)
All of these
10.

Heat always travels from...

a)

Warm to cool

b)

Cool to warm

c)

Warm to warm

d)

Cool to cool

11.

A hot air balloon rising is an example of ...

a)

conduction

b)

convection

c)

radiation

d)

connection

12.

A snowman melting in the sun

a)

convection

b)

conduction

c)

radiation

d)

connection

13.

Heating a kettle on a hot stove (burner)

a)

convection

b)

conduction

c)

radiation

d)

connection

14.

At what point does the biker have the greatest Kinetic Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

15.

At what point does the biker have the greatest Potential Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

16.

What is the Energy Conversion that is shown in the image depicting photosynthesis?

a)

Radiant to Thermal

b)

Thermal to Chemical

c)

Chemical to Radiant

d)

Radiant to Chemical

17.

Which of the following is an example of a Thermal Conductor?

a)

Plastic

b)

Styrofoam

c)

Wood

d)

Copper

18.

Which of the following is an example of a Thermal Insulator?

a)

Iron

b)

Aluminum

c)

Wood

d)

Copper

19.

Cold things often have a _________ kinetic energy because_______

a)

lower; particles are moving around less

b)

lower; particles are moving around more

c)

higher; particles are moving around the same

d)

higher; particles do not move

20.

Objects with MORE MASS have MORE thermal energy because

a)

there are more molecules with energy in bonds

b)

there are less atoms

c)

there is less kinetic energy in the system

d)

there is no potential energy at all

21.
Which of the following means of transportation uses a renewable resource for its energy source?
a)
solar powered car
b)
coal powered steam train
c)
natural gas car
d)
gasoline truck
22.
A farmer decides that he is going to produce his own energy on the farm by using a type of renewable energy. The renewable energy could come from--
a)
setting up wind turbines
b)
having a coal furnace
c)
using natural gas
d)
burning oil
23.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
24.
Efficiency is...
a)
The percentage of energy that is actually used to do work
b)
The stuff in the walls that keeps energy in
25.

If the factory is using an abandoned lot in a remote area to illegally dump toxic chemicals from a factory. What could result from the actions of the company?

a)

The chemicals can only affect the ground (geosphere)

b)

The chemicals cannot be absorbed into the atmosphere (air)

c)

The chemicals can get into the water (hydrosphere) and harm animals (biosphere)

d)

The chemicals cannot cause harm because the cave contains only rocks

26.

Which of the following correctly identifies the relationship between speed and kinetic energy?

a)

Higher speed = increased kinetic energy

b)

Higher speed = decreased kinetic energy

c)

Lower speed = increased kinetic energy

d)

None of these

27.

How much potential energy is at the top of the first hill on a roller coaster ride?

a)

100%

b)

50%

c)

0%

d)

20%

28.

What is it called when another scientist does someone's experiment to see if the results are valid?

a)

repetition

b)

replication

c)

experimental method

d)

controlled variable

29.
Dr. Smith has been reading about another scientist’s research in a physics journal. He plans to do these experiments himself and see if he gets the same result.
a)
repetition
b)
replication
30.
Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.
a)
repetition
b)
replication
31.

Which of the following energy transformations occurs when food is digested?

a)

chemical to kinetic

b)

radiant to nuclear

c)

mechanical to potential

d)

thermal to chemical

32.

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

a)

one reaches a temperature of zero

b)

they both have an equal temperature

c)

one runs out of energy

33.

A ball is thrown into the air as shown in the image. At Point C, all of the ball's energy is stored as gravitational potential energy. By the time it reaches Point D, the ball has gained 3 J of kinetic energy. As it continues its fall from Point D to Point E, its kinetic energy increases by another 7 J. What is the ball's change in gravitational potential energy as it falls from Point C to Point E?

a)

An increase of about 7 J

b)

An increase of about 10 J

c)

A decrease of about 7 J

d)

A decrease of about 10 J

34.

Some skateboarders use a structure called a half-pipe, like the one shown, to perform impressive tricks. Which of the positions will provide a skateboarder with the GREATEST potential energy?

a)

1

b)

2

c)

3

d)

4

35.

Some skateboarders use a structure called a half-pipe, like the one shown, to perform impressive tricks. Which of the positions will provide a skateboarder with the GREATEST kinetic energy?

a)

1

b)

2

c)

3

d)

4

36.

The table shows the speed and height over time of a ball that starts at rest, then is dropped from the top of a building, which is 60 meters (m) tall. Use the table to answer any questions that follow.


What is happening to the ball's energy at a time of 1.5 seconds?

a)

The ball's kinetic energy is decreasing and its potential energy is decreasing

b)

The ball's kinetic energy is increasing and its potential energy is decreasing

c)

The ball's kinetic energy is decreasing and its potential energy is increasing

d)

The ball's kinetic energy is increasing and its potential energy is increasing

37.
A person walked 10 miles.  It took them 2 hours.  How fast were they walking?
a)
8 mph
b)
5 mph
c)
2 mph
d)
10 mph
38.

Which runner has the fastest constant speed?

a)

A

b)

B

c)

C

d)

Not enough information to tell

39.

Which runner has the slowest constant speed?

a)

A

b)

B

c)

C

d)

Not enough information to tell

40.

Using the table, which graph shows Emanuel's bike trip?

a)
b)
c)
d)
41.

How long is the object returning to start?

a)

2 seconds

b)

3 seconds

c)

5 seconds

d)

8 seconds

42.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
43.

The gravitational force exerted by an object depends on its

a)

volume

b)

mass

c)

weight

44.

Which is needed to determine the amount of gravitational force between two objects?

a)

distance and mass

b)

weight and time

c)

area and weight

45.

What is this graph showing?

a)

Gradually slowing down (deceleration)

b)

Gradually speeding up (acceleration)

c)

Constant speed

d)

Stopped

46.

Lilly was trying to explain to her friend the difference between a theory and a law in science. She used the theory of plate tectonics and the law of superposition as examples. Lilli explained the difference by using non-scientific language. Which statement could Lilly use to correctly describe the difference between a theory and a law in science?

a)

A theory describes a natural event, while a law explains it.

b)

A theory explains a natural event, while a law predicts it.

c)

A theory explains a natural event, while a law describes it.

d)

A theory predicts a natural event, while a law explains it.

47.

Which of these describes a natural phenomenon or relationship that always occurs under specific conditions

a)

theory

b)

law

48.

Which of these explain how a natural phenomenon works or happens?

a)

theory

b)

law

49.

Two people are fighting over the same pencil and trying to pull it in opposite directions. The forces acting on the pencil are unbalanced. Which of the following statements is incorrect?

a)

The motion of the pencil changes

b)

The direction the pencil is moving changes

c)

The pencil does not change speed or direction

d)

The pencil moves in the direction of the person pulling with a greater force.

50.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
51.
What does this graph represent?
a)

Constant speed

b)

Acceleration

(not constant speed)

c)

Not moving

52.

Elias decides to do an experiment with mass and gravity. He climbs up on the roof and drops a 500 g box of feathers and a 500 g box of marbles and times how long they both take to fall to the ground. Both boxes are the exact same size and shape. What do you think he found out?

a)

Both boxes fall at the same speed

b)

The box of marbles falls faster

c)

The box of feathers falls faster

d)

The box of feathers falls slower

53.

What can you do to improve an experiment and get more accurate and valid results?

a)

Repetition

b)

Change an independent variable

c)

Change more than one thing at a time

d)

Change your hypothesis to match the results

54.

When a pendulum swings, at which point is kinetic energy greatest?

a)

1

b)

2

c)

3

d)

4

55.

What is happening to the energy of the pendulum between position 1 to 3?

a)

Potential is transforming to Kinetic

b)

Kinetic is transforming to Potential

c)

The amounts of Potential and Kinetic energy are the same at every point

56.

Which would change if an astronaut visited another planet?

a)

mass

b)

weight

c)

volume

57.

Ms. Langsdale is driving out of the school parking lot one day when a group of students darts out in front of her car. She slams on the breaks. Which of the following is an example of friction in this situation?

a)

The ground pushing up on the car

b)

Ms. Langsdale's hands gripping the steering wheel

c)

The angry glare Ms. Langsdale gives the students

d)

The car brake pad rubbing the rim of the tire

58.

Josh wants to test two different Taki flavors, blue and red, to see which one is spicier. To find out, should he eat the same or different amounts of each flavor?

a)

The same amount because the amount is the dependent variable

b)

The same amount because flavor is the independent variable

c)

Different amounts because amount is the independent varialbe

d)

Different amounts because spice level is the independent variable

59.

Which way is the object moving?

a)

it's either not moving or moving at a constant speed due to balanced forces

b)

to the right

c)

to the bottom

d)

up

60.
What is the net force
a)
10 N
b)
0 N
c)
25 N
d)
1 N
61.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
62.
Which is moving up?
a)
a & b
b)
b
c)
b & c
d)
d
63.
Is it BALANCED? 
a)
Yes
b)
No
64.

Which of these explain how a natural phenomenon works or happens?

a)

theory

b)

law

65.

Based on the data in the chart shown, which vehicle is safest for its occupants?

a)

Motorcycle

b)

SUV

c)

Sedan

d)

All are equally safe

66.

Which of the options is an example of a contact force?

a)

friction

b)

magnets

c)

gravity

d)

electrostatic

67.

If the weight of an object doubles, that means the mass

a)

doubled.

b)

quadrupled.

c)

was halved.

d)

was unaffected.

68.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
69.

In Activity 77, you used green toy carts to model cars while investigating how mass effects the force applied in a collision. Your carts represented some, but not all, of the characteristics of a car. Is it acceptable that you ignored some of the characteristics in your model?

a)

Yes, because the included characteristics represented what was being studied about a car's motion

b)

Yes, because the model looked like a car and models should look like what they represent.

c)

Yes, because the included characteristics represented were interesting

d)

No, models should always include every detail about what they represent

70.

Models can be helpful in scientific investigations because

a)

it may not be possible to work with the real thing.

b)

they can be smaller and more manageable than the real thing.

c)

they can be safer to work with than the real thing.

d)

all of the above

71.

Which wave shown has the HIGHEST energy?

a)

1

b)

2

c)

3

d)

4

72.

Which wave shown has the LOWEST frequency?

a)

1

b)

2

c)

3

d)

4

73.

Which wave shown has the HIGHEST frequency?

a)

1

b)

2

c)

3

d)

4

74.

Sound waves are longitudinal waves. Which of the following properties of sound waves effect the speed at which they travel?

a)

frequency of wave

b)

wavelength

c)

origin of wave

d)

material that the wave travels through

75.

The Eisenhower soccer team is forced to play a game out on the field in the middle of a storm when suddenly, lightning strikes Joshua as he's running. SELECT ALL energy types that result from this energy transformation.

a)

light

b)

sound

c)

chemical

d)

thermal

76.

Why does the sign on the storage closet door look yellow?

a)

The sign reflects yellow and absorbs other colors

b)

The sign absorbs yellow and reflects other colors

c)

The sign reflect all colors and absorbs none

d)

The sign absorbs all colors and reflects none

77.

Which of the shown illustrations is modeling reflection?

a)

A

b)

B

c)

C

d)

None of them

78.

Which of the shown illustrations is modeling refraction?

a)

A

b)

B

c)

C

d)

None of them

79.

Which of the shown illustrations is modeling absorption?

a)

A

b)

B

c)

C

d)

None of them

80.

In which state of matter would sound travel the fastest?

a)

solid

b)

liquid

c)

gas

d)

sound speed is unaffected by the matter through which it transfers

81.

An illustration of waves on the EM spectrum is shown. What relationship do you notice between frequency and wavelength?

a)

Wavelength decreases as frequency decreases

b)

Wavelength decreases as frequency increases

c)

Wavelength increases as frequency increases

d)

There is no relationship

82.

An illustration of waves on the EM spectrum is shown. What happens to wavelength as frequency increases?

a)

Wavelength decreases

b)

Wavelength increases

c)

Frequency has no effect on wavelength

83.

Which type of wave shown is the most energetic?

a)

Radio

b)

Microwaves

c)

Infrared

d)

X-rays

e)

Gamma

84.

Which type of wave shown is the least energetic?

a)

Radio

b)

Microwaves

c)

Infrared

d)

X-rays

e)

Gamma

85.

Which type of material would be best to use to absorb sound waves?

a)

Plastic wrap

b)

Foam panels

c)

Copy paper

d)

Wood chips

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