Question 1

The energy attributed to an object by virtue of its motion is known as

Accepted Answer

A)  potential energy.
B)  kinetic energy.
C)  radiative energy.
D)  mass-energy.E) B) and D)
F) C) and D)

Question 2

Where does the energy come from that your body uses to keep you alive?

Accepted Answer

A)  It is produced from the radiative energy of the Sun on your skin.
B)  It comes from the foods you eat.
C)  It comes from the water you drink.
D)  It is in the air that you breathe.
E)  It is created during the time that you rest or sleep.F) B) and E)
G) A) and C)

Question 3

In which of the following cases would you feel weightless?

Accepted Answer

A)  while falling from a roof
B)  while parachuting from an airplane
C)  while accelerating downward in an elevator
D)  while walking on the MoonE) C) and D)
F) B) and C)

Question 4

Which of the following statements is not one of Newton's laws of motion?

Accepted Answer

A)  What goes up must come down.
B)  The rate of change of momentum of an object is equal to the net force applied to the object.
C)  In the absence of a net force,an object moves with constant velocity.
D)  For any force,there always is an equal and opposite reaction force.
E)  All of the above are Newton's laws of motion.F) C) and D)
G) C) and E)

Question 5

Suppose you heat up an oven and boil a pot of water.Which of the following explains why you would be burned by sticking your hand briefly in the pot but not by sticking your hand briefly in the oven?

Accepted Answer

A)  The oven has a higher temperature than the water.
B)  The water has a higher temperature than the oven.
C)  The oven has a higher heat content than the water.
D)  The molecules in the water are moving faster than the molecules in the oven.
E)  The water has a higher heat content than the oven because of density.F) A) and B)
G) B) and D)

Question 6

Which object has the most kinetic energy?

Accepted Answer

A)  a 4-ton truck moving 50 km/hr
B)  a 3-ton truck moving 70 km/hr
C)  a 2-ton truck moving 90 km/hr
D)  a 1-ton truck moving 110 km/hr
E)  A,B,C,and D all have the same kinetic energy.F) A) and E)
G) B) and E)

Question 7

Process of Science: Why is it not science to start with the answer to a question and look for evidence to support it?

Accepted Answer

The process of science involves asking a...

Question 8

Which statement must be true in order for a rocket to travel from Earth to another planet?

Accepted Answer

A)  It must carry a lot of extra fuel.
B)  It must have very large engines.
C)  It must attain escape velocity from Earth.
D)  It must be launched from space,rather than from the ground.E) A) and B)
F) A) and C)

Question 9

The amount of gravitational potential energy released as an object falls depends on

Accepted Answer

A)  its mass and the distance it falls,as well as the rate of gravitational acceleration.
B)  its mass and its speed at the time it begins falling.
C)  only the distance it falls.
D)  only its mass.
E)  only its speed at the time it begins falling.F) C) and D)
G) None of the above

Question 10

A rock held above the ground has potential energy.As the rock falls,this potential energy is converted to kinetic energy.Finally,the rock hits the ground and stays there.What has happened to the energy?

Accepted Answer

A)  The energy goes to producing sound and to heating the ground,rock,and surrounding air.
B)  The energy goes into the ground,and as a result,the orbit of the Earth about the Sun is slightly changed.
C)  The rock keeps the energy inside it in the form of mass-energy.
D)  It is transformed back into gravitational potential energy.E) A) and D)
F) B) and D)

Question 11

Suppose that two objects collide.Which of the following things is not the same both before and after the collision?

Accepted Answer

A)  the total temperature of the objects
B)  the total momentum of the objects
C)  the total angular momentum of the objects
D)  the total energy of the objectsE) A) and B)
F) B) and D)

Question 12

What does temperature measure?

Accepted Answer

A)  the average mass of particles in a substance
B)  the total potential energy of particles in a substance
C)  the total amount of heat in a substance
D)  the average kinetic energy of particles in a substanceE) All of the above
F) None of the above

Question 13

In the formula E = mc²,what does E represent?

Accepted Answer

A)  the kinetic energy of a moving object
B)  the radiative energy carried by light
C)  the gravitational potential energy of an object held above the ground
D)  the mass-energy,or potential energy stored in an object's mass
E)  the electric charge of the objectF) C) and E)
G) A) and E)

Question 14

According to the universal law of gravitation,if you double the masses of both attracting objects,then the gravitational force between them will

Accepted Answer

A)  not change at all.
B)  increase by a factor of 2.
C)  decrease by a factor of 2.
D)  increase by a factor of 4.
E)  decrease by a factor of 4.F) C) and E)
G) A) and B)

Question 15

The movement of a pool ball,after being struck by a cue,is an example of

Accepted Answer

A)  Newton's first law of motion.
B)  Newton's second law of motion.
C)  Newton's third law of motion.
D)  the universal law of gravitation.
E)  conservation of momentum.F) C) and D)
G) All of the above

Question 16

Unbound orbits have more orbital energy than bound orbits.

Accepted Answer

A) True 
 B)False

Question 17

If your mass is 60 kg on Earth,what would your mass be on the Moon?

Accepted Answer

A)  10 lb
B)  10 kg
C)  50 kg
D)  60 kg
E)  60 lbF) A) and B)
G) A) and C)

Question 18

The Moon is slowly moving away from Earth.

Accepted Answer

A) True 
 B)False

Question 19

What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?

Accepted Answer

A)  It would travel away from Earth into the solar system.
B)  It would travel in a higher orbit around Earth.
C)  It would take less time to reach its bound orbit.
D)  It would orbit Earth at a faster velocity.
E)  It would be in an unstable orbit.F) All of the above
G) C) and E)

Question 20

The tides on Earth are an example of

Accepted Answer

A)  Newton's first law of motion.
B)  Newton's second law of motion.
C)  Newton's third law of motion.
D)  the universal law of gravitation.
E)  none of the aboveF) A) and D)
G) A) and B)

Exam 4: Making Sense of the Universe: Understanding Motion, Energy, and Gravity

Which object has the most kinetic energy?

Correct AnswerverifiedShow Answer

The energy attributed to an object by virtue of its motion is known as

Correct AnswerverifiedShow Answer

Suppose you heat up an oven and boil a pot of water.Which of the following explains why you would be burned by sticking your hand briefly in the pot but not by sticking your hand briefly in the oven?

Correct AnswerverifiedShow Answer

A rock held above the ground has potential energy.As the rock falls,this potential energy is converted to kinetic energy.Finally,the rock hits the ground and stays there.What has happened to the energy?

Correct AnswerverifiedShow Answer

Where does the energy come from that your body uses to keep you alive?

Correct AnswerverifiedShow Answer

According to the universal law of gravitation,if you double the masses of both attracting objects,then the gravitational force between them will

Correct AnswerverifiedShow Answer

What does temperature measure?

Correct AnswerverifiedShow Answer

The amount of gravitational potential energy released as an object falls depends on

Correct AnswerverifiedShow Answer

If your mass is 60 kg on Earth,what would your mass be on the Moon?

Correct AnswerverifiedShow Answer

Which statement must be true in order for a rocket to travel from Earth to another planet?

Correct AnswerverifiedShow Answer

Unbound orbits have more orbital energy than bound orbits.

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The tides on Earth are an example of

Correct AnswerverifiedShow Answer

The movement of a pool ball,after being struck by a cue,is an example of

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In the formula E = mc²,what does E represent?

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Process of Science: Why is it not science to start with the answer to a question and look for evidence to support it?

Correct AnswerverifiedThe process of science involves asking a...View AnswerShow Answer

Which of the following statements is not one of Newton's laws of motion?

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What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?

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In which of the following cases would you feel weightless?

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Suppose that two objects collide.Which of the following things is not the same both before and after the collision?

Correct AnswerverifiedShow Answer

The Moon is slowly moving away from Earth.

Correct AnswerverifiedShow Answer

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The process of science involves asking a...
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