Thermal Energy Test Review

Heat always travels from

• cold to hot
• hot to cold
• back and forth between hot and cold
• Heat does not travel

Your tia is frying an egg for you in a pan. What type of thermal energy is being transferred between the pan and the egg?

• Potential Energy
• Conduction
• Convection
• Radiation

The hotter the substance, the ______________ its kinetic energy.

• higher
• lower

Radiation comes from sources like

• a boiling pot of water, a lava lamp, or a room with a heater
• the sun's rays, a heat lamp, waves of energy from a fire
• touching a hot rock, touching a cup of hot cocoa

Heat travels from hot to cold until

• switches temperatures
• the two objects are at the same temperature

The same amount of dye was dropped in at the same amount of water at the same time. Describe the temperature and kinetic energy of each beaker by looking at how far the dye has spread.

• The first has the highest temperature and the highest kinetic energy.
• The second has the highest temperature energy and the highest kinetic energy
• The first has the highest temperature and the lowest kinetic energy.
• The second has the highest temperature and lowest kinetic energy.

An ice cube is melting on the counter melts to form water until the water reaches room temperature. Which is true?

• The ice cube gives thermal energy to the room.
• Thermal energy moves room the ice cube to the room and back to the ice cube again.
• The ice cube absorbs thermal energy from the room.
• The thermal energy in the room absorbs the cold from the ice cube.

Ms. Charles is frying a T-bone steak in a pan for dinner. How does the thermal energy move?

• The energy moves as the warm steak rises and the cold steak sinks.
• The energy goes from the fire directly into the steak without going through the pan.
• The energy moves from the hot pan to the cooler fire.
• The energy moves from the hot pan into the steak where they touch.

Describe the transfer of heat.

• Thermal energy moves from a warmer object to a cooler object until all the temperatures are different.
• Thermal energy moves from a cooler object to a warmer object until all are the same temperature.
• Thermal energy moves from a warmer object to a cooler object until all are the same temperature .
• Thermal energy moves from a cooler object to a warmer object until all the temperatures are different.

A bottle of Gatorade at room temperature (23 C) is put into the refrigerator (5 C) for the game. How will the thermal energy move?

• The thermal energy will move in both directions until the temperature is equal in the Gatorade and in the air.
• The thermal energy will move from the Gatorade to the air until the Gatorade temperature is zero degrees Celsius.
• The thermal energy will move from the cooler air to lower the temperature to the temperature of the refrigerator.
• The thermal energy will move from the Gatorade to the air until the temperature in both is equal.