Heat transfer review

_____________________ : heat transfer through direct contact

• Conduction

• Convection

• Radiation

Select all the examples of conduction below. Hint: there are two!

• Frying an egg in a pan

• Using air conditioning to cool the top floors

• Melting a popsicle in the sun

• Leaving a spoon in hot coffee

Tags

NGSS.MS-PS3-4

How does heat transfer?

• From hot areas to cold areas

• From cold areas to hot areas

• It depends on the object

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Explain why the metal part on the top of a lighter will be hot, even after the flame goes out.

• The heat rises from the flame to heat the metal part up.

• The metal part is in contact with the flame, which makes it heat up.

• The metal part is heated by the sun through radiation

Tags

NGSS.MS-PS1-4

____________________: the rising and falling of particles as they're heated (i.e. heat rises, cold falls)

• Conduction

• Convection

• Radiation

Tags

NGSS.MS-PS1-4

What makes cold air fall towards the ground?

• Cold air is attracted to the ground

• Cold air is more dense (heavier) than hot air

• Cold air doesn't fall--it moves around in different spots!

Tags

NGSS.MS-PS1-4

Explain how a lava lamp works, thinking about convection. As a note, there is a lamp at the bottom that heats the liquid inside. Hint: there are two parts of this explanation to get it right!

• The lamp heats the liquid inside, causing it to float to the top.

• The liquid inside is a non-Newtonian fluid that acts differently.

• The sun outside will pull the liquid inside to the top.

• The liquid cools at the top away from the lamp, causing it to fall back down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

_________________: heat transfer through invisible electromagnetic waves

• Conduction

• Convection

• Radiation

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Identify all the examples of radiation below. Hint: there are three examples!

• You straighten your hair with a hot flat iron

• The sun tanning your skin

• A heat lamp keeps food warm

• Your hands are warmed by the fire

Which image shows an example of convection?

• A

• B

• C

Tags

NGSS.MS-ESS2-6