Heat & Temperature Exam

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

Thermal energy always moves from ___________ to __________.

• Hot to Hot
• Cold to hot
• Warmer to cooler
• Cooler to warmer

Which of the following is used for measuring temperature?

• thermometer

• barometer

• anemometer

• scapulometer

• phalangometer

George holds an ice cube in his hand. As he squeezes the ice, it begins to melt. Which of the following best explains why this happens?

• George absorbs heat from the ice.

• Heat moves from George's hand into the cube and warms it.

• Cold moves from the ice onto George’s hand as it melts.

• George releases cold to the ice.

Answer explanation

What is the process that turns a gas into a liquid?

• melting

• freezing

• evaporation

• condensation

What is the process that turns a liquid into a solid?

• melting

• freezing

• evaporation

• condensation

The water in Mario’s swimming pool absorbs energy as heat during the day. Which of the following would the water in the pool be most likely to do?

• condense

• evaporate

• freeze

• melt

Emerson places a beaker of water on a hotplate and turns the hotplate on. The temperature in the room is 25 ºC. After the water heats to 75 ºC, she adds pieces of ice to the beaker.

Which of the following describes a transfer of heat energy that occurs during this experiment? Energy moves....

• from the air to the water

• from the ice to the beaker

• from the water to the ice

• from the water to the hotplate

How does the thermal energy of the liquid in the larger beaker compare to the thermal energy of the liquid in the smaller beaker?

• The liquid in the larger beaker has less thermal energy than the liquid in the smaller beaker.

• The liquid in the larger beaker has more thermal energy than the liquid in the smaller beaker.

• The liquid in the larger beaker has the same amount of thermal energy as the liquid in the smaller beaker.

• The exact volume of the liquid in each beaker must be known to compare the thermal energy of the liquids.

When you touch something that feels cold, 

• heat from your hand moves into the cold substance.
• coldness moves from the cold substance into your hand.
• it melts.
• it freezes.