7th Grade HONORS Energy Test

Which statement BEST describes the kinetic energy of the #7 race car during the eight laps of the race?

• The kinetic energy of the car steadily

   increased for the entire race

• The kinetic energy of the car did not 

  change throughout the race

• The kinetic energy remained constant; 

  only the speed changed

• The kinetic energy increased then it 

  varied and slowly decreased

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Your family decided to go on a family bike ride. You all get to the top of the highest hill in the neighborhood and decide race home. Which of the following can you use to determine which rider has the greatest potential energy on the top?

• the mass of the bike and rider

• the speed of the bike

• the age of the rider

• the length of the hill

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

As the ball rolls down the ramp, gravitational potential energy is transformed into kinetic energy.

Consider the ball rolling down the ramp.  Which graph represents the change in potential and kinetic energy?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

NGSS.MS-PS3-1

Which statement BEST compares positions B and C on this roller coaster?

• Positions B and C would have the exact same amount of kinetic energy

• Positions B and C would have the exact same amount of potential energy

• Position C would have more kinetic energy because it is moving slower than at position B

• Position B would have more kinetic energy because it’s traveling faster than at position C

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What happens as a roller coaster goes downhill?

• kinetic energy is converted into potential energy.

• potential energy is converted into kinetic energy.

• electrical energy is converted into potential energy.

• potential energy is converted into electrical energy.

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

According to the law of conservation of energy,

• an object loses most of its energy as friction

• the total amount of energy for a system stays the same. It's never created or destroyed

• the potential energy of an object is always greater than its kinetic energy.

• the kinetic energy of an object is always greater than its potential energy.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

The maximum kinetic energy of a box sliding from the top of a ramp to the bottom is

• at the top.

• right before the box reaches the bottom.

• at the exact middle of the ramp.

• equal along all locations on the ramp

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What would happen to a 10 kg block of ice if you slowly increased the kinetic energy of the molecules within the ice?

• The ice would melt from the transfer of energy

• Sublimation would occur.

• The ice would remain frozen.

• Water vapor near the ice would also freeze.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement does not accurately describe kinetic energy?

• When the kinetic energy of an object changes, energy is transferred to or from the object.

• Kinetic energy can be transferred to sound or heat.

• The total energy in a system can increase or decrease, but the kinetic energy is always constant.

• The more mass and velocity an object has, the more kinetic energy it has.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the scenarios best models the conversion of electrical energy into thermal energy?

• Someone warms their hands by rubbing them together quickly. 

• Someone warms their hands by placing them by a fire.

• Someone warms their hands by wearing gloves. 

• Someone warms their hands by placing them near a lamp plugged into the wall.