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1. Plastic foam is a good heat
A. conductor.
B. absorber.
C. insulator.
D. emitter.
2. Which temperature scale puts the freezing
point of water at 0 degrees?
A.
B.
C.
Kelvin
Celsius
Caloric Fahrenheit
Substance
Specific heat capacity (cal/g·°C)
Water
1.0
Olive oil
0.47
Clay
0.33
Aluminum
0.22
Steel
0.12
Copper
0.092
Silver
0.056
Lead
0.031
3. Using the table above, determine which
substance absorbs the most energy in a
temperature increase of 1°C.
A. Copper
B. Lead
C. Water
D. Aluminum
4. Internal energy is the
A. average amount of energy contained in an
object.
B. total amount of energy contained in an
object.
C. amount of kinetic energy all the molecules
have.
D. amount of energy that is transferred from
one object to another object.
E. all of the above
5. Heat is measured in
A. calories.
B. kilocalories.
C. joules.
D. all of the above.
E. none of the above.
6. When heat is added to boiling water at
constant atmospheric pressure, the
temperature of the boiling water
A. stays the same.
B. increases.
C. decreases.
Substance
Specific heat capacity (cal/g·°C)
Water
1.0
Olive oil
0.47
Clay
0.33
Aluminum
0.22
Steel
0.12
Copper
0.092
Silver
0.056
Lead
0.031
7. Two grams of a substance underwent a 1 °C change
in temperature when 0.44 calories of heat was added
to the substance. What was the substance? (Use
information from the table above.)
A.
Steel
B.
Water
C.
Olive oil
D.
Aluminum
8. The reason an ocean's temperature doesn't
vary much from one season to the next is
that
A. oceans are located in mild regions of the
Earth.
B. oceans are located next to large land areas.
C. water has a low specific heat capacity.
D. there are a lot of fish in the oceans.
E. water has a high specific heat capacity.
9. Your grandmother places a pitcher of iced tea next
to a plate of warm, freshly baked cookies so that the
pitcher and the plate are touching. You tell your
grandmother that the plates are in thermal contact,
which means that
A.
heat flows from the warm plate to the cold pitcher
and from the cold pitcher to the warm plate.
B.
heat flows from the cold pitcher to the warm plate.
C.
heat flows within the warm plate but not within the
cold pitcher.
D.
heat flows from the warm plate to the cold pitcher.
10. The metallic coating on the glass surfaces
of a Thermos vacuum bottle reduces the
amount of energy transferred by
A. radiation.
B. friction.
C. conduction.
D. convection.
11. Heat transfer by conduction in metals
occurs when
A. atoms give off heat in the form of
electromagnetic waves.
B. large numbers of atoms move from place to
place.
C. electromagnetic waves travel from one place
to another through a vacuum.
D. electrons bump into atoms and other
electrons.
E. none of the above
12. Heat transfer by convection occurs when
A. electromagnetic waves travel from one place
to another through a vacuum.
B. atoms give off heat in the form of
electromagnetic waves.
C. large numbers of atoms move from place to
place.
D. electrons bump into other electrons.
E. none of the above
13. The reason you can hold your fingers
beside a candle flame without getting hurt is
that
A.
B.
C.
D.
E.
hot air rises.
air is a poor heat conductor.
air convects heat well.
hot-air convection currents travel upward.
all of the above
14. You are feeling sick, so you place a thermometer
under your tongue to check your temperature. The
directions on the box tell you to leave the
thermometer there for three minutes before you read
your temperature. Why should you wait?
A.
It takes some time for the thermometer to raise
your body’s internal energy.
B.
It takes some time for the thermometer to reach its
activation energy.
C.
It takes some time for the thermometer and your
body to reach the same temperature
D.
It takes some time for the thermometer and your
body to attain a state of contact.
15. Heat travels from the sun to Earth by
A. conduction.
B. convection.
C. insulation.
D. radiation.
16. Specific heat capacity is related to the
amount of heat
A. transferred by one molecule.
B. one molecule contains.
C. needed to change the temperature of one
gram of a substance one degree.
D. a specific object has.
E. transferred by one object.
17. Evaporation is a cooling process and
condensation is
A. neither a warming nor a cooling process.
B. a warming process.
C. a cooling process also.
18. The molecules in a room-temperature
glass of water move around at
A. much the same rates of speed.
B. no speed (they are not moving).
C. a great variety of speeds.
19. If you take a shower in a steamy bathroom
and then go to your bedroom to dry off, why
will you feel colder in your bedroom?
A. Because water evaporates off of your skin,
your skin will be warmer.
B. Because water condenses on your skin, your
skin will be warmer.
C. Because water evaporates off of your skin,
your skin will be cooled.
D. Because water condenses on your skin, your
skin will be cooled.
20. Heat is the
A. average amount of energy per molecule
contained in an object.
B. amount of energy all the molecules have.
C. total amount of energy contained in an
object.
D. energy transferred between objects because
of a temperature difference.
E. all of the above
Substance
Specific heat capacity (cal/g·°C)
Water
1.0
Olive oil
0.47
Clay
0.33
Aluminum
0.22
Steel
0.12
Copper
0.092
Silver
0.056
Lead
0.031
21. How much heat energy is needed to raise the
temperature of 1 g of steel by 2 °C? (Use
information from the table above.)
A. 0.12 calories
B. 0.24 calories
C. 6 calories
D. 0.06 calories
22. As the average kinetic energy of the
molecules in a substance increases, the
A.
B.
C.
D.
temperature of the substance decreases.
potential energy of the substance changes.
temperature of the substance increases.
temperature remains the same.