Review on Heat Transfer & Layers of the Earth

Which statement correctly describes convection?

• The transfer or flow of currents, liquids, or gases.
• Energy transferred in the form of waves or rays.
• All of Earth's water.
• none of the above

Which statement correctly describes conduction

• A thin layer of gases around Earth.
• Guiding sunlight towards the Earth.
• The transfer of heat when objects touch.
• none of the above

Which statement correctly describes radiation

• All of Earth's water.
• The transfer of heat in waves or rays.
• The rocks on Earth.
• The gases of the Earth.

What is thermal energy?

• A thin layer of gasses surrounding Earth.
• The total energy of motion in the particles of a substance.
• The speed at which air/gas moves.
• The rate at which water changes into gas.

Earth receives energy from the sun through what method of heat transfer?

• conduction
• convection
• radiation
• none of the above

Which method of heat transfer is illustrated by the picture below? Using a blanket at night.

• conduction
• convection
• radiation
• none of the above

Which method of heat transfer is illustrated by the picture below? Hot water or air rising.

• conduction
• convection
• radiation
• none of the above

Which method of heat transfer is illustrated by the picture below? Ice cream melting on a hot day.

• conduction
• convection
• radiation
• none of the above

Which method of heat transfer is illustrated by the picture below? Holding an ice cube.

• conduction
• convection
• radiation
• none of the above

Why does air rise?

• a. It has a lower kinetic energy.
• b. It becomes less dense.
• c. It increases in temperature.
• d. both b and c