Energy 2021

How does the sun warm a person’s face?

• evaporation

• conduction

• convection

• radiation

Which best describes an example of heat transfer through radiation?

• getting warm in front of a portable heater

• burning your finger on a curling iron

• ironing a dress shirt and tie

• cooking soup on the stove

Which best explains why a metal ice cream scoop works more efficiently than a plastic ice cream scoop when dipped in warm water prior to scooping the ice cream?

• The metal heats more quickly than the plastic.

• The plastic heats more quickly than the metal.

• The metal insulates against heat.

• The plastic conducts heat.

Why is copper often used to line the bottom of cookware?

• Copper cools quickly.

• Copper is inexpensive.

• Copper is a good insulator.

• Copper is a good conductor.

Which best describes heat transfer due to convection?

• It occurs with direct contact.

• It occurs only during the day.

• It occurs with movement of a fluid.

• It occurs only when something is burning.

Which container will be less likely to feel cold on the outside when filled with ice?

• a foam cup

• a glass cup

• a metal cup

• a paper cup

When a warm plate is placed onto a cool counter, which most likely occurs?

• The plate gains heat and the countertop gains heat.

• The plate loses heat and the countertop gains heat.

• The plate gains heat and the countertop loses heat.

• The plate loses heat and the countertop loses heat.

Which best describes an example of conduction?

• a heater warming a room

• water boiling in a pot on a stove

• an ice cube melting in a cup of hot chocolate

• cold water moving toward the bottom of a swimming pool

While riding his bike, Dawson starts to notice his face and shoulders beginning to burn. How is this most likely occurring?

• due to radiation from the sun

• due to conduction from his bike

• due to convection causing a hot wind

• due to evaporation of sweat on his skin

Which best describes how heat is transferred due to convection?

• through direct contact with a hot object

• through the movement of gases or liquids

• through the absorption of the sun’s energy

• through the process of liquid changing into a gas