Question 1 (1 point)
During an experiment, a canister filled with hot water was added to a beaker filled with cold water. In which direction did the heat energy move?
a
The heat energy moved from the hot water of the canister into the cold water of the beaker.
b
Equal amounts of heat energy from each container moved in both directions.
c
The heat energy moved from the cold water of the beaker into the hot water of the canister.
d
No heat energy moved, as it all remained in the canister of hot water.
Question 2 (1 point)
The diagram below shows two substances, A and B, which are at different temperatures.
What will happen when substance A is dropped into substance B?
a
Substance A and B will eventually reach the same temperature.
b
Substance A will get even warmer as heat flows into it from substance B.
c
Substance A and B will exchange heat, and they both will reach 25°C.
d
Substance A and B will exchange heat, and they both will reach 50°C.
Question 3 (1 point)
An aluminum block with a temperature of 300oC is placed into 200 milliliters of water with a temperature of 20oC. Which statement best describes what will be observed in this experiment?
a
Heat will flow from the metal to the water until both are at a temperature somewhere between 20oC and 300oC.
b
Heat will flow from the metal to the water until both are at the temperature of the container.
c
Heat will flow from the metal to the water until both are 300oC.
d
Heat will flow from the metal to the water until both are 20oC.
Question 4 (1 point)
A mixture of gases is heated and rises to the top of its container. Which statement best explains this result?
a
Heated gases will have decreased kinetic energy and increased density.
b
Heated gases will have increased kinetic energy and increased density.
c
Heated gases will have increased kinetic energy and decreased density.
d
Heated gases will have decreased kinetic energy and decreased density.
Question 5 (1 point)
A student wants to show the transfer of heat energy without matter. Which investigation design would best help the student?
a
an investigation of radiation through a current in a fluid
b
an investigation of conduction through collisions between particles in space
c
an investigation of radiation through electromagnetic waves
d
an investigation of conduction through the movement of particles through a solid
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Question 1: a
The heat energy moved from the hot water of the canister into the cold water of the beaker.
Question 2: a
Substance A and B will eventually reach the same temperature.
Question 3: a
Heat will flow from the metal to the water until both are at a temperature somewhere between 20oC and 300oC.
Question 4: c
Heated gases will have increased kinetic energy and decreased density.
Question 5: c
An investigation of radiation through electromagnetic waves would best help the student show the transfer of heat energy without matter.