Energy Transfer

Heat or thermal energy moves from

• cold to hot

• hot to cold

• there is no energy transfer

• Huh, what's thermal energy?

Tags

NGSS.MS-PS1-4

What does a temperature measure?

• years

• heat

• movement of molecules

• weight

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In an ice cube, the molecules

• move very fast

• move sort of fast

• move at a medium pace

• are not moving

Tags

NGSS.MS-PS1-4

In a glass of room temperature water

• the molecules move very fast

• the molecules are bouncing around everywhere

• the molecules move around a bit

• the molecules don't move at all

Tags

NGSS.MS-PS1-4

When a frozen lake starts to thaw

• energy is gained

• energy is lost

• there is no transfer of energy

Tags

NGSS.MS-PS1-4

When your soup cools down after several minutes

• energy is gained

• energy is lost

• there is no energy transfer

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Where does the heat from your soup go?

• it evaporates

• it's transferred to the air

• there is no energy transfer

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Conduction happens when energy is directly transferred from one thing to another. The following material is a good conductor

• cotton

• feathers

• wood

• metal

Tags

NGSS.MS-PS3-3

Thermal insulators are not good conductors and prevent energy transfer. The following are good insulators

• styroform

• fiberglass

• wood

• single pane glass

Tags

NGSS.MS-PS3-3

Warm molecules move

• at the same rate as cold molecules

• faster than cold molecules

• slower than cold molecules

Tags

NGSS.MS-PS1-4