Heat and Heat Transfer

When a gas or liquid heat up, what happens?

• molecules are closer together, become less dense, and rise

• molecules are spread out, become less dense, and rise

• molecules are closer together, become denser, and rise

Tags

NGSS.MS-PS1-4

The rising and falling of air due to uneven heating of the Earth's surface is called

• convection

• radiation

• conduction

• does not happen

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Mr. Salyer has a two-story house. In the winter, he uses his downstairs heating unit because the arm air

• contracts, rises, and heats the house through conduction

• expands, sinks, and heats the house through convection

• expands, rises, and heats the house through convection

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which is NOT a good insulator?

• metal

• plastic

• wood

• cloth

Tags

NGSS.MS-PS3-3

Near the ceiling of a room the air is warmer; the warm air rises because of

• conduction
• convection
• radiation

Some cook pans have copper on the bottom to heat evenly.

Copper transfers heat to the pan by

• conduction

• convection

• radiation

Tags

NGSS.MS-PS3-3

Warm air over the beach rises while cooler, dense air from the ocean rushes in due to

• conduction
• convection
• radiation

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Weather systems in the Earth's atmosphere are due to

• conduction
• convection
• radiation

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch.  Why?

• Metals conduct heat better than wood.
• Wood conducts heat better than metals.
• Metals pull in heat because heat is attracted to metals.
• Wood isn't as strong as metals.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

When placed in direct sunlight, which object will absorb the most radiation?

• A black sweater
• A white sweater
• A snowball
• Aluminum foil

Tags

NGSS.MS-PS4-2