Heat Transfer

Which describes what can happen as a result of radiation?

• A piece of wood burns in a fire.

• A shirt is hot after having been ironed.

• A can of soup is heated in a pot on a stove.

• A car’s inside temperature rises to over 100 degrees on a sunny day.

What is the original source of most of the energy that people use?

• Energy that reaches Earth’s surface by radiation from the Sun.

• Energy that reaches Earth’s surface by convection from the Sun.

• Energy that reaches Earth’s surface by radiation from Earth’s core.

• Energy that reaches Earth’s surface by conduction from Earth’s core.

Mrs. Warren’s class is learning about heat transfer. Her class observes a pot of boiling water and describes the process. The students note that as the water at the bottom heats up, it rises. The cool water at the top falls, and the cycle continues. Which best describes the process the students are observing?

• conduction

• convection

• radiation

• transformation

How does radiation compare to conduction?

• Radiation is heat transfer through liquid, and conduction is heat transfer through air.

• Radiation is heat transfer through materials touching, and conduction is heat transfer through air.

• Radiation is heat transfer through air, and conduction is heat transfer through liquid.

• Radiation is heat transfer through air, and conduction is heat transfer through materials touching.

A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?

• combustion

• convection

• radiation

• conduction

Which best describes the transfer of heat due to the movement of gases or liquids?

• radiation

• convection

• evaporation

• condensation

In what way does the Sun warm Earth?

• radiation

• convection

• conduction

• condensation

Joe is cooking dinner on the stove. When he picks up the pan by the handle, he burns his hand. Which form of heat transfer caused Joe to burn his hand?

• radiation

• conduction

• convection

A dark-colored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person?

• radiation

• conduction

• convection

• insulation

On a hot summer day, a student dropped an ice cube onto a park bench. Within minutes, the ice cube melted. Which best describes the process the student observed?

• radiation

• combustion

• conduction

• convection