Heat and temperature

What is the definition of CONVECTION

• When heat transfers through waves.

• When heat transfers from objects that are touching.

• warm fluid rises; cool fluid sinks

• Heat traveling from the sun

Tags

NGSS.MS-PS1-4

Warm air is __________ dense than cold air and rises creating convection currents.

• more
• less

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the BEST example of a conductor? 

• A wooden block
• A ceramic mug
• A glass cup
• A metal bowl

An insulator . . .

• Allows a lot of heat to escape
• Makes the temperature of an object rise
• Moves heat from one place to another
• Traps heat inside an object

Tags

NGSS.MS-PS3-3

True or False: A thermal conductor transfers heat well between two objects, and the heat does not stay in one place.

• True
• False

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is the BEST example of a conductor?

• A plastic toy
• A wooden table
• A styrofoam cup
• A metal shed

Thermal energy always moves from ___________ to __________.

• Hot to Hot
• Cold to hot
• Warmer to cooler
• Cooler to warmer

Why does warm air rise and cool air sink?

• Warm air is less dense than cooler air.
• Warm air is more dense than cooler air.
• Warm air weighs less than cooler air.
• Warm air weighs more than cooler air. 

When would an object left in a room temperature room stop transferring heat?

• When it has reached the same temperature as the room temperature air

• When it has lost all of its thermal energy

• When it has gained all of the air's thermal energy

• When it has gained or lost all of it's coldness to the air

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When I drink coffee in the morning, I warm my hands on the mug by what type of heat transfer?

• conduction

• convection

• radiation

• coziness