Conservation of Energy Practice Quiz

As a rock rolls down a mountain, the total mechanical energy is the same throughout the entire path of the rolling rock. When a rock is at the top of a tall mountain, describe the distribution of kinetic energy and gravitational potential energy.

• High potential energy; low kinetic energy

• Low potential energy; high kinetic energy

• High potential energy; high kinetic energy

• Low potential energy; low kinetic energy

Tags

NGSS.MS-PS3-2

Which of the following describes the transformation of energy that occurs as a log is burned in a fireplace?

• Kinetic energy that is stored in the atoms in the log is converted to potential energy.

• Gravitational energy that is stored in the log is converted to mechanical energy.

• Light energy that is stored in the log is converted to chemical potential energy.

• Chemical energy that is stored in the bonds in the log is converted to thermal energy.

Tags

NGSS.HS-PS3-4

Which of the following statements best represent the concept that energy is not created or destroyed during energy transformations at an amusement park?

• Energy is transformed between kinetic energy and gravitational potential energy throughout the ups and downs of the roller coaster.

• Mechanical energy is destroyed on the swings in order to get them to slow down.

• Electrical energy is transformed to mechanical energy in order to make the Ferris wheel rotate. The same amount of energy is conserved throughout the ride.

• The carousel has less energy at the end of the ride than at any other time.

• A roller coaster has more gravitational potential energy when it reaches the bottom of the ride.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What happens to the potential energy (PE) of the pendulum when it is at its highest point?

• PE is at its maximum.

• PE is at its minimum.

• PE is equal to kinetic energy.

• PE is zero.

Tags

NGSS.MS-PS3-2

When the pendulum is at the lowest point of its swing, what is true about its kinetic energy (KE)?

• KE is at its maximum.

• KE is at its minimum.

• KE is equal to potential energy.

• KE is zero.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How does the total energy of the pendulum change during its motion?

• The total energy remains constant.

• The total energy increases.

• The total energy decreases.

• The total energy fluctuates randomly.

Tags

NGSS.MS-PS3-5

What is the relationship between kinetic energy (KE) and potential energy (PE) at the midpoint of the pendulum's swing?

• KE equals PE.

• KE is greater than PE.

• KE is less than PE.

• KE and PE are both zero.

Tags

NGSS.MS-PS3-2

What does the data suggest about the pendulum's motion over time?

• It gains energy

• It maintains the same height

• It loses energy

• It speeds up

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

After collecting the data in Table 1 (Part II), the student noted energy was being lost because the maximum height was decreasing. Which of the following is evidence that energy was still being conserved?

• There was no transfer of energy in the pendulum at all.

• Only the potential energy was being transformed into another type of energy.

• The kinetic and potential energy were being transformed into thermal energy.

• Only the gravitational energy was transformed into potential energy.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

According to Graph 1 (Part I) and Figure 1 (Part I), if no external forces like air resistance or friction act on the pendulum, what would happen to the total of the potential and kinetic energy of the pendulum?

• They would decrease as the pendulum moves.

• They would increase as the pendulum moves.

• They would disappear completely.

• They would remain constant.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5