Name _____________________
Date _______________________
Unit 2 Test Energy Transfer
1. Heat always transfers from:
a. Larger to smaller
b. Cold to hot
c. Smaller to larger
d. Hot to cold
2. Which best explains why a full glass
bottle of water should not be stored in
the freezer ?
a. The temperature of the freezer will
make the water too cold.
b. Water expands when it freezes
which could break the bottle.
c. Water contracts when it freezes
which could break the bottle.
d. The temperature of the freezer will
not make the water cold enough.
3. Which material would be best for a
cooking tool that is used when grilling
over a fire?
a. plastic
b. metal
c. paper
d. wood
4. Jose is cooking an egg in boiling water
on the stove. The handle of the pan is
metal. When he touches the handle he
gets burned. Why did this happen?
a. Radiation causes the pot to be hot
and he gets burned.
b. Conduction causes the pot to be
hot and he gets burned.
c. Convection causes the pot to be hot
and he gets burned.
d. Conduction causes the air to be hot
and he gets burned.
5. On a sunny, summer day June was
sunburned. What type of heat transfer
occurred to cause her to get burned?
a. Radiation coming from the sun.
b. Conduction coming from the sun.
c. Convection coming from the sun.
d. Conduction coming from the
ground.
6. While camping, a family roasted hot
dogs. To heat the hot dogs they put
them on sticks and held them above the
flames. What type of heat transfer most
likely heated the hot dogs?
a. Radiation coming from the sun to
the hot dog.
b. Radiation coming from the hot dog
to the fire.
c. Convection causing the warm air to
rise and heat the hot dog.
d. Conduction heating the stick and
then heating the hot dog.
7. Students place 30 grams of ice in four
different cups. Their data is described
below.
Temperature
around cup
Styrofoam cup
70 degrees
Metal cup
70 degrees
Glass cup
70 degrees
Plastic cup
70 degrees
Which cup will have the most ice after
20 minutes?
a. Styrofoam cup
b. Metal cup
c. Glass cup
d. Plastic cup
8. Which best explains how the earth
atmosphere is heated and cooled?
a. During conduction warm air rises
and cool air falls.
b. During convection cool air rises and
warm air falls.
c. During radiation warm air rises and
cool air falls.
d. During convection warm air rises
and cool air falls.
9. Look at the picture below. Which types
of heat transfer is responsible for
heating the boy’s knees.
a.
b.
c.
d.
Conduction
Convection
Radiation
Transpiration
10. Plastic does not conduct heat like many
materials. Which product made from
plastic takes best advantage of this
characteristic?
a. a table
b. a cooler
c. a bucket
d. a hairbrush
11. A cold metal spoon is placed in a hot
bowl of soup. Which best describes how
the spoon is affected?
a. The heat from the soup does not
affect the temperature of the
spoon.
b. The heat from the soup is
conducted through the spoon
making the spoon warmer.
c. The cool air radiates into the soup
cooling the soup and keeping the
spoon cool.
d. The cold from the spoon is
conducted into the soup causing
the soup to cool to the same
temperature as the spoon.
12. Which is an example of heat transfer by
convection?
a. a glowing light bulb
b. heating the atmosphere
c. cooking using a microwave oven
d. heating a piece of metal in a flame
13. Which of the following is an example of
radiation?
a. Macaroni moving around a pot of
boiling water.
b. Steam rising from a boiling pot of
grits
c. The sun shining through a window
warming a table.
d. A hot air balloon rising up in the air.
14. Which is an example of heat transfer by
conduction?
a. Bacon frying in a pan
b. Water boiling in a pan
c. A slide getting warm on a sunny day
d. Steam rising from a cup of hot
chocolate.
15. How does radiation compare to
conduction?
a. Radiation is heat transfer through
liquid and conduction is heat
transfer through air.
b. Radiation is heat transfer through
materials touching and conduction
is heat transfer through air.
c. Radiation is heat transfer through
space and conduction is heat
transfer through liquid.
d. Radiation is heat transfer through
space and conduction is heat
transfer through materials
touching.
16. How does convection compare to
radiation?
a. During convection heat needs to
travel though a solid and radiation
doesn’t.
b. During radiation heat needs to
travel through a solid and
convection doesn’t.
c. During convection heat needs to
travel through a liquid or gas and
radiation needs to travel through a
solid
d. During convection heat needs to
travel through a liquid or gas and
radiation doesn’t.
17. In what way does the Sun warm the
Earth?
a. radiation
b. conduction
c. convection
d. condensation
18. Draw one picture on the bubble sheet
that shows all 3 methods of heat
transfer. Make sure you label all the
parts. Explain your drawing. You may
not use any examples from the test.