Heat Transfer Notes (Conduction, Convection, Radiation)

In which direction does heat always transfer?

Hot to Cold

What are the three types of heat transfer?

• Conduction

• Convection

• Radiation

Conduction - heat is transferred due to ________ ________ (________)

molecular, contact, touch

Using the images below, explain how the heat is being tranferred through conduction.

• Flame touches end of spoon

• Particles vibrate more

• Particles hitting each other

• Transferring heat (hot to cold)

• PARTICLES HAVE TO TOUCH

Convention - heat is transferred due to _________ in _________.

differences, density

Using the image below, explain how the heat is being transferred through convection.

• Heat up

• Move faster

• Spread apart

• Less dense

• Particles cool

• Closer together

• Slow down

• More dense

Radiation - heat is being transferred through ______ _______ using ________.

open, space, waves

Using the image below, explain how the heat is being transferred through radiation.

• Heat is transferred through waves

• Waves flow away from the bulb

Summarize - Convection

Transfers heat by differences in density

Summarize - Conduction

Transfers heat by touch/contact

Summarize - Radiation

Transfers heat through open space using waves

Label each type of heat transfer in the image below.

• 1 - Convection

• 2 - Conduction

• 3 - Radiation