Name: ______________________________________________ Date:___________ Block: ______
Heat Transfer Review
Key Points: HEAT TRANSFER
-
Heat is a form of ___________________
Heat always flows from ______________ to _________________
Heat is transferred by _______________________________, _______________________________, and
______________________________
Key Points: CONVECTION
-
Cold = ____________ dense
Hot = __________ dense
cold things ___________________ because they are ______________ dense
hot things ___________________ because they are _______________ dense;
heat flows from materials that are __________ dense to materials that are ____________
dense
Key Points: CONDUCTION
-
Conduction is the transfer of heat from one thing ______________________another.
In order for conduction to occur, the objects must be _____________________.
____________________, ____________________, and ____________________ can all conduct heat.
___________________ are the best conductors of heat energy.
Key Points: RADIATION
-Radiation is when heat energy is transferred through the ____________ from one object to
another. (The objects are NOT touching)
-The heat is transferred as _________________________ _____________________.
-Infrared light is an electromagnetic wavelength that is _________________________________ to us.
A. Show, with arrows, how convection moves heat energy to heat your soup on the stove.
EXPLAIN A
B. Show, with arrows, how convection moves heat energy from the core towards the crust, causing
movement of tectonic plates.
EXPLAIN OPTION B
4. Imagine that you have a pool and you want to install a heater in the pool to keep the water warm.
Where in the pool you would put the heater to keep the water warm everywhere in the pool? Why?
5. Why are solids better conductors of heat than liquids?
6. Why do you wear multiple layers in the winter but not in the summer?
7. Label the 3 different ways in which heat is transferred from the fire.
8. True/False
True False
Warm air rises because it become more dense then the air around it.
True False
Heat flows from hot areas to cooler areas.
True False
We can see the radiation that comes from the sun.
True False
The opposite of conduction is insulation.
9. Directions: Which type of heat transfer is involved in the situations below? Read the statement
and circle the letter(s) that best describe(s) how the heat is transferred. D = conduction, V =
convection, and R = radiation.
D
V R
This type of heat travels by creating differences in densities.
D
V R
This type of heat travels by vibrating and banging into other molecules in a solid.
D
V R
You feel the heat of a wood stove when you stand next to it.
D
V R
You iron your shirt for the CTRA Winter Formal.
D
V R
You roast a marshmallow over a fire to make s’mores.
D
V R
You place a spoon into a cup of cocoa and it gets hot over time.
D
V R
Warm water rises in a lake. Cold water descends.
D
V R
A black T-shirt feels warmer than a white T-shirt while out in the sun.
D
V R
How heat from the sun reaches Earth.