Thermal Energy

Molecules in a hotter sample will....

• have more kinetic energy

• be moving faster

• be moving slower

• be red in color

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

There will always be heat transfer between two objects that are touching if...

• the temperatures are the same in each sample

• there is a difference in temperature between samples

When a hot and cold sample first come into contact with each other...

• all of the molecules in both samples will have the same kinetic energy

• some of the molecules in both samples will have a different kinetic energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

Jason put an apple on top of an ice pack in his lunch bag. By lunchtime the temperature of his apple had decreased. What happened to the molecules in the apple when the temperature of the apple decreased?

• The energy of the molecules in the apple decreased.

• The cold energy of the molecules in the apple increased.

• The apple lost heat molecules.

• The energy of the molecules in the apple increased.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Absolute zero is...

• when the temperature is 0 degrees Celsius

• when there are no molecules

• all of the choices

• when molecules have zero molecular movement.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The average kinetic energy of the molecules that make up this sample is

• 2

• 4

• 3

• 27

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

temperature

• the amount of movement that atoms store

• The transfer of energy from one form to another

• A measure of the average speed of the molecules of a substance.

Tags

NGSS.MS-PS1-4

Where is the thermal energy flowing to?

• From the hot air to the ice cream

• From the ice cream to the air

• From the ice cream to the girl's hand

• From the girl's hand to the ice cream

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the particles in an object when thermal energy increases?

• particles move faster

• particles move slower

• particles stay the same speed

Tags

NGSS.MS-PS1-4