Heat Transfer

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List what they have in
common

List what they have in
common

List what they have in
common

Temperature vs. Heat

 Temperature- a measure of the amount of kinetic
energy in a substance
 Heat- a transfer of energy between two objects due
to a difference in temperature
 Heat always moves from hot to cold
3 Ways Heat can be
Transferred

 Conduction
 Convection
 Radiation
Conduction

 The transfer of heat (energy) from one substance to
another substance that is touching it
 It is most effective in solids, but can happen in liquids
 Fun fact: Have you ever noticed that metals tend to feel
cold?
 Believe it or not, they are not colder! They only feel
colder because they conduct heat away from your hand.
You perceive the heat that is leaving your hand as cold
Convection

 The transfer of heat (energy) by the movement of
matter.
 Happens mostly in gas and liquids
 This happens with currents
 Colder matter (more dense) sinks below warmer
matter and pushed warmer matter up
 Have you ever heard of the saying “warm air rises”
 Why does colder matter sink? (hint: use kinetic
energy, molecules, and density)
Radiation

 Electromagnetic waves directly transport energy
through space
 Done without the help of fluids or solids
 Travel in waves
Electromagnetic
Spectrum

A. Convection
B. Conduction
C. Radiation
Why you use a hot pad when touching a metal pot that has been
on the stove
A. Convection
B. Conduction
C. Radiation
This causes an entire pot of hot what to boil
A. Convection
B. Conduction
C. Radiation
A rain shadow is a result of this type of heat transfer.
A. Convection
B. Conduction
C. Radiation
The sun heats the surface of the Earth through this
A. Convection
B. Conduction
Melting ice in your hand
C. Radiation
A. Convection
B. Conduction
C. Radiation
A microwave cooks food with this
A. Convection
B. Conduction
C. Radiation
Land and sea breezes are caused by this. (Actually all winds are)
A. Convection
B. Conduction
X-Rays
C. Radiation
A. Convection
B. Conduction
C. Radiation
This is why a metal spoon gets warm when placed in a hot drink
A. Convection
B. Conduction
C. Radiation
This causes condensation on the outside of an ice cold drink
A. Convection
B. Conduction
C. Radiation
Typically, thunderstorms with large cumulonimbus clouds only
occur in warmer months. That is because they are formed by….
A. Convection
B. Conduction
C. Radiation
Radio waves are an example of…
A. Convection
B. Conduction
C. Radiation
This causes plate tectonics (movement of plates on Earth’s surface)
A. Convection
B. Conduction
C. Radiation
Your cellphone creates/receives this to communicate to other
devices
A. Convection
B. Conduction
C. Radiation
This causes trade winds, westerlies, and easterlies that affect major
weather patterns. For example: The ITCZ near the equator most
often has clouds and rain. This is also where rainforests are.
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