Conduction, Convection, or Radiation
2
3
4
5
100
A metal spoon placed in a cup of hot cocoa becomes hot. Which process transfers heat from the bowl of the spoon to the handle?
Conduction
100
The diagram above shows a 2-liter bottle without a cap. The bottle has a balloon attached to its top. The bottle has been placed in the freezer for several hours, so it is very cold. If warm hands grasp the bottle, the balloon will expand and stand upright. Which of the following BEST explains why the hands cause the balloon to expand?
A. The hands cooled the air that rose up into the balloon.
B. The hands warmed the air that rose up into the balloon.
B. The hands warmed the air that rose up into the balloon.
100
When a solid melts into a liquid, what happens to the kinetic energy of the particles?
A. It decreases.
B. It stays the same.
C. It increases.
D. It fluctuates randomly.
C. It increases.
100
What happens to the kinetic energy of a metal when you increase the temperature without it melting?
A. The kinetic energy of the particles remains constant.
B. The particles vibrate with greater energy.
C. The temperature of the solid has no effect on the particles’ kinetic energy.
D. The kinetic energy of particles increases as they absorb heat.
E. The particles move slower with increasing temperature.
B. The particles vibrate with greater energy.
D. The kinetic energy of particles increases as they absorb heat.
100
How does the kinetic energy of particles in a liquid compare to that in a gas at the same temperature?
A. It is higher.
B. It is lower.
C. It is the same.
D. It varies randomly.
C. It is the same.
200
touching a hot seat belt when you get into a car
Conduction
200
Which examples best verify that thermal energy will move from warm areas to cool areas until a uniform temperature is achieved?
Select TWO correct answers.
A.A person sitting under a fan feels cooler than a person sitting far away from the fan.
B.A refrigerator stays cool until it loses electrical power, at which point the refrigerator will heat up.
C. A radiator pumps heat into a cold room and the radiator eventually shuts off once the entire room has reached a certain temperature.
D. An ice cube is sprinkled with salt which causes the ice cube to melt.
E. A pot of water boils to an equal temperature when it sits on a stovetop for 10 minutes.
C. A radiator pumps heat into a cold room and the radiator eventually shuts off once the entire room has reached a certain temperature.
E. A pot of water boils to an equal temperature when it sits on a stovetop for 10 minutes.
200
Which of the following best describes kinetic energy?
A. energy stored within chemical bonds
B. energy of motion of particles
C. energy due to position
D. energy within atomic nuclei
B. energy of motion of particles
200
If the average kinetic energy of particles in a substance doubles, what happens to its temperature?
A. It decreases.
B. It halves.
C. It doubles.
D. It remains the same.
C. It doubles.
200
The heat transfers from areas of ___________ temperature to areas of ___________ temperature until the _____________ of the water reaches __________ .
Word Bank: Lower, temperature, higher, and equilibrium
higher, lower, temperature, and equilibrium
300
warm air that rises to the ceiling in your house
Convection
300
How does thermal energy move? Select TWO correct answers.
A.from an object with a lower temperature to one with a higher temperature
B.from an object with a higher temperature to one with a lower temperature
C.from an object with lower kinetic energy to an object with higher kinetic energy
D. from an object with higher kinetic energy to an object with lower kinetic energy
B.from an object with a higher temperature to one with a lower temperature
D. from an object with higher kinetic energy to an object with lower kinetic energy
300
As a pot of water is heated, what happens to the particles of water as the temperatures increase?
A. They move faster.
B. They move slower.
C. They stop moving.
D. They do not change.
A. They move faster.
300
Choose the phrase that correctly completes the sentence.
When volcanoes erupt, the lava eventually cools and turns into rocks because the motion of the particles __________ Speed up, maintains speed, slows down, or stops completely.
slow downs
300
This question has two parts. First, answer Part A. Then answer Part B.
Part A
When a cup of coffee cools from 150°F to 125°F, what happens to the molecules in this liquid?
Select TWO correct answers.
A. It gains thermal energy.
B. The molecule's motion slows down.
C. The distance between molecules is closer.
D. The molecules move faster.
E. It gains kinetic energy.
Part B
If the coffee from Part A was being warmed from 125°F to 150°F, what will happen to the molecules in this liquid? Select TWO correct answers.
A. will gain thermal energy
B. will lose thermal energy
C. molecule's motion slows down
D. molecule's motion speeds up
E. molecule's motion remains unchanged
Part A
B. The molecule's motion slows down.
C. The distance between molecules is closer.
Part B
A. will gain thermal energy
D. molecule's motion speeds up
400
heat emitted by an electric heater
radiation
400
Which type of energy is transferred when an ice cube at 0°C is placed in a container of water at 60°C?
__________Energy
Thermal
400
Which example best verifies the fact that thermal energy will move from warm areas toward cool areas until uniform temperature is achieved?
A. A person sitting under a fan feels cooler than a person sitting far away from the fan.
B. A refrigerator stays cool until it loses electrical power, at which point the refrigerator will heat up.
C. A radiator pumps heat into a cold room and the radiator eventually shuts off once the entire room has reached a certain temperature.
D. An ice cube is sprinkled with salt which causes the ice cube to melt.
C. A radiator pumps heat into a cold room and the radiator eventually shuts off once the entire room has reached a certain temperature.
400
What is the main factor that temperature measures in a substance?
A. the volume of particles
B. the density of particles
C. the kinetic energy of particles
D. the number of particles
C. the kinetic energy of particles
400
This question has two parts. First, answer Part A. Then answer Part B.
Part A
A student was cooking chicken in the frying pan.
Which type of heat transfer is taking place between the pan and the chicken?
A. radiation
B. convection
C. electrical
D. conduction
Part B
Which explanation below best supports the answer to Part A?
A. the transfer of heat through an empty space
B. the transfer of heat through direct particles of matter
C. the transfer of heat through mass movement of heated liquid
D. the transfer of heat through gases
Part A
D. conduction
Part B
B. the transfer of heat through direct particles of matter
500
hot air rising above a fire
convection
500
During a warm summer day, a car became extremely hot. When a student went to open the car door, he burned his fingers.
What TWO methods of heat transfer were responsible for the student burning his fingers?
Radiation and Conduction
500
Two iron blocks of the same size, have different temperatures. The first block has an initial temperature of 22°C and the second block has an initial temperature of 52°C. The two blocks are pushed together so that they are touching and the temperature of the first block is measured to show it is increasing in temperature. After 16 minutes, the temperature of the first block stops increasing and is measured to be 35°C. The temperature of this block stays at 35°C for another 10 minutes.
What would the temperature of the second block be at this time?
A. 22°C
B. 35°C
C. 37°C
D. 52°C
B. 35°C
500
What happens to the kinetic energy of water molecules as liquid water changes to water vapor?
A.The kinetic energy of the water molecules decreases as they move to a water vapor state.
B. The kinetic energy of the water particles increases as they move to a water vapor state.
C. Water molecules become stationary in the water vapor state.
D. Water vapor molecules have higher average kinetic energy than in the liquid water state.
E. The change in kinetic energy of the molecules depends only on the volume of the water vapor.
B. The kinetic energy of the water particles increases as they move to a water vapor state.
D. Water vapor molecules have higher average kinetic energy than in the liquid water state.ey move to a water vapor state.
500
Models are great ways of representing complex ideas with a simple representation. An example of this is the model below of the layers of the Earth. In the diagram, how is the heat being transferred?
A. Convection
B. Conduction
C. Radiation
D. Specific
A. Convection