Conduction & Convection

What is heat transfer?

• The movement of heat from one object to another

• The creation of heat energy

• The loss of heat energy

• The transformation of heat from one form to another

Tags

NGSS.4-PS3-2

In which direction does heat move?

• From warmer to cooler

• From cooler to warmer

• From north to south

• From east to west

Tags

NGSS.4-PS3-2

When energy increases, the speed of molecules ______.

• Increases

• Decreases

• Stay the same

Tags

NGSS.4-PS3-1

When molecules are heated, what happens to them?

• They speed up, becomes less dense, and rise

• They speed up, become more dense, and rise

• They slow down, become less dense, and sink

• They slow down, become more dense, and sink

Tags

NGSS.4-PS3-2

NGSS.5-PS1-1

What happens to warmed molecules after they rise to the top?

• They cool down, become more dense, and sink

• They cool down, become more dense, and rise

• They warm up, become more dense, and rise

• They warm up, become less dense, and sink

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4

What is conduction?

• The transfer of heat through direct contact

• The transfer of heat through the rise of warm fluids and sinking of cool fluids

• The transfer of heat through electromagnetic waves

• The transfer of heat through fluids

Tags

NGSS.4-PS3-2

Objects that easily transfer heat (metals are good at this)

• Conductors

• Insulators

• Fluids

• Molecules

Tags

NGSS.4-PS3-2

Objects that do not allow heat to transfer easily through them (wood, plastic, fabrics)

• Conductors

• Insulators

• Molecules

• Fluids

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which example(s) describes conduction?

• An egg frying in a pan

• Feeling heat from the sun

• Jumping in a lake to cool off

• Cooking a hot dog over a fire

Tags

NGSS.4-PS3-2

Which molecules have more energy?

• Cold

• Hot

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5