Lab Aids Energy Test Review

Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?

• low mass and low height

• low mass and high height

• high mass and high height

• high mass and low height

Tags

NGSS.MS-PS3-2

At which point(s) is the gravitation potential energy the highest?

• point A

• point C

• points A and E

• points B and D

At which point(s) is energy being transformed from kinetic energy of motion to gravitational potential energy as the skateboarder goes back and forth on the track?

• point B

• point D

• points A and E

• points B and D

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Rubbing two wooden sticks together can sometimes result in a fire. What would increase the probability of a fire starting?

• using longer sticks.

• rubbing the sticks together more quickly

• holding the sticks higher off the ground

• all of the above

Tags

NGSS.MS-PS1-4

Which statement most accurately describes the Law of Conservation of Energy?

• Energy can not be created or destroyed but it can change from one type to another.

• Energy is created from the Earth and is destroyed when we use it.

• Energy should be saved (conserved) for use in the future.

• All forms of energy can be classified as either potential or kinetic.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-1

The efficiency of an average gasoline powered car is about 20%. This means,

• The gas tank needs to be 20% filled with gasoline for motion.

• The car uses 80% of the energy stored in the gasoline for motion.

• The car uses 20% of the energy stored in the gasoline for motion.

• The car wastes 20% of the energy stored in the gasoline.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What energy transformation takes place when a radio is plugged in and turned on?

• kinetic to potential

• electrical to sound

• wire to radio waves

• battery to motion

When you open the door to a refrigerator for a minute, what happens?

• Thermal energy in the refrigerator is transferred to the air outside the refrigerator.

• Thermal energy in the air outside the refrigerator is transferred to the inside of the refrigerator.

• The temperature of the air inside the refrigerator decreases.

• The temperature of the air just outside the refrigerator increases.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Cory noticed that the hood of the car was hot after driving it for a while. What energy transformation was she noticing?

• chemical energy → thermal energy

• thermal energy → motion (kinetic)

• temperature energy → braking energy

• motion (kinetic) → thermal energy

Tags

NGSS.MS-PS3-5

The following methods will melt an ice cube quickly, except

• hold it in your hand and change hands when one hand gets cold.

• put it in a glass of room temperature water.

• put it in an insulating container.

• break it into pieces and warm up the pieces.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3