ENERGY UNIT TEST

Londyn wraps her hands around a cup of hot tea. Which type of energy is responsible for the warmth Londyn feels on her hands?

• absorption

• conduction

• convection

• radiation

Which choice is an example of conduction?

• The sun emits light. The light The sun emits light. The light transfers through open space, and Earth receives some of this light.

• A person places a cold apple on a warm plate. Heat transfers from the warm plate to the cold apple.

• Hot air exists near Earth's surface. This hot air rises, and then colder air moves downward toward Earth's surface.

• A person fills a balloon with helium. The person releases the balloon, and it rises because it is less dense than the surrounding air.

• absorbtion

• conduction

• convection

• radiation

• conduction

• convection

• evaporation

• radiation

Which BEST describes the transfer of energy in the picture?

• Heat is being transferred from the person's hand to the ice by convection.

• Heat is being transferrred from the person's hand to the ice by conduction.

• Coolness is being transferred from the ice to the person's hand by convection.

• Coolness is being transferred from the ice to the person's hand by conduction.

• The energy is transferred as thermal radiation and light because no direct contact is needed between the sun and Earth.

• The energy is transferred by conduction because no direct contact is needed between the sun and Earth.

• The energy is transferred as thermal radiation because at times the sun and Earth are in direct contact.

• The energy is transferred by conduction because the sun and Earth are always in direct contact.

• conduction

• convection

• expansion

• radiation

• boiling

• conduction

• convection

• radiation

What BEST describes the energy exchange in the diagram?

• Coolness travels from the ice cube to the hand by convection.

• Coolness travels from the ice cube to the hand by conduction.

• Heat travels from the hand to the ice cube by convection.

• Heat travels from the hand to the ice cube by conduction.

How is heat being transferred to the man?

• condensation

• conduction

• convection

• radiation