Thermal Energy TEST practice

For Questions 1 and 2: The diagram below shows two insulated Styrofoam cups of water connected by an aluminum bar. The thermometers show the temperature of the water in cup A and cup B at the beginning of a heat-flow experiment. Over the next 15 minutes, which changes would most likely occur?

• The temperature in cup A will decrease and the temperature in cup B will increase.

• The temperature in cup A will decrease and the temperature in cup B will decrease.

• The temperature in cup A will increase and the temperature in cup B will increase.

• The temperature in cup A will increase and the temperature in cup B will decrease.

Which process is most responsible for the temperature changes that will take place?

• Conduction of heat through the aluminum bar

• Radiation of heat from the water in the cups to the thermometers

• Radiation of heat from the water in the cups into the air

• Conduction of heat through the air to the water in the cups

Which example best demonstrates the process of conduction?

• A metal spoon gets warm when used to stir hot soup.

• A piece of paper is torn in half.

• Warmed air rises above a lit candle.

• Sunlight brightens a dark room.

Which of the following statements best explains how heat flows by convection?

• A large mass of warm air rises, replacing the cooler air above.

• A large mass of air begins to move faster.

• Energy is transferred by electromagnetic waves.

• Energy is transferred from molecule to molecule.

What method of heat transfer allows the Sun's energy to reach Earth through the vacuum of space?

• Radiation

• Convection

• Conduction

• Condensation

Which of the following statements describes an advantage of using a wooden spoon instead of a metal spoon to stir a pot of hot soup?

• A wooden spoon does not conduct heat to its handle as quickly as a metal spoon.

• A wooden spoon radiates heat faster than a metal spoon.

• A wooden spoon has a lower specific heat than a metal spoon.

• A wooden spoon lowers the boiling point of the soup, but a metal spoon does not.

Which process is primarily responsible for the transfer of heat indicated by the arrows in the beaker of water?

• Convection

• Conduction

• Radiation

• Condensation

Which of the following statements best explains how heat flows by conduction?

• Energy is transferred from molecule to molecule.

• Energy is transferred by electromagnetic waves.

• A large mass of air begins to move faster.

• A large mass of warm air rises, replacing the cooler air above.

Sunlight warms an area of Earth's surface. Winds then carry thermal energy from this area to another location. Which two heat transfer processes are primarily involved in this situation?

• Radiation and convection

• Radiation and evaporation

• Conduction and convection

• Conduction and evaporation

Which statement describes how the majority of the energy received by Earth is transmitted by the Sun?

• Electromagnetic waves carry energy from the Sun through space.

• Heated atoms emitted by the Sun move through space.

• Heat energy from the Sun creates convection currents through space.

• Vibrating atoms in the Sun transfer heat energy to neighboring atoms in space.