Thermal Energy Practice Quiz for Test

Molecules in a hotter sample will....(there is more than one answer)

• have more kinetic energy

• be moving faster

• be moving slower

• be red in color

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Molecules move at the same speed no matter what the temperature.

• true

• false

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-1

When will heat transfer stop? (There is more than one answer)

• When the molecules reach a state of equilibrium

• When the molecules are moving at the same speed

• When the kinetic energy is equal

• When there is a phase change from liquid to gas

Energy will always be transferred from the...

• hotter sample to the colder sample

• colder sample to the hotter sample

Tags

NGSS.MS-PS1-4

When hot and cold air make contact with each other...

• the hot air will lose kinetic energy

• cold air will lose kinetic energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Why do molecules change speed? (There is more than one answer)

• Molecules change speed when they are at equilibrium

• Molecules speed up when they get energy from other molecules

• Sample A is hotter then sample B

• Molecules slow down when they give energy to other molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Why does the transfer of energy between two colliding things stop?

• Molecules stop transferring energy when colliding systems reach equilibrium

• When the two non-colliding things get equally hot molecules make energy

• Molecules make more kinetic energy until it is balanced

• The molecules of a system destroy energy when the system is balanced

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

NGSS.MS-PS2-1

When two things are in contact, kinetic energy transfers...

• from slow-moving molecules to faster-moving molecules.

• from fast-moving molecules to slower-moving molecules.

• between the two things.

• nowhere and disappears

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing?

• More heat molecules combine with the molecules in the ground.

• The cold energy of the molecules in the ground decreases.

• The energy of the molecules in the ground decreases.

• The energy of the molecules in the ground increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Claude is in the kitchen cooking and is going to stack one pan on top of another pan. The two pans are the same size and have the same number of molecules. The diagram above shows the pans now, before they touch each other.

How does the temperature of the top pan compare with the temperature of the bottom pan now, and what will happen after the pans have been touching for a while?

• Before the pans touch, the bottom pan is hotter than the top pan. Once the pans are touching, the bottom pan will transfer kinetic energy to the molecules in the cooler top pan until both pans reach the same temperature, which will be in between their starting temperatures.

• Before the pans touch, the bottom pan is hotter than the top pan. Once the pans are touching, the cooler top pan will gain kinetic energy until the molecules in both pans have an energy of 70, because hotter things increase the temperature of cooler things.

• Before the pans touch, the bottom pan is cooler than the top pan. Once the pans are touching, the top pan will transfer kinetic energy to the molecules in the cooler bottom pan until both pans reach the same temperature, which will be in between their starting temperatures.

• Before the pans touch, the two pans are different temperatures. Once the pans are touching, both kinetic energy and cold energy will transfer between the molecules in the two pans until both pans reach the same temperature, which will be in between their starting temperatures.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5