Question

sort the statements about heat transfer into the correct columns.
sun heats earth.
warm air rises.
waves transfer heat.
touch transfers heat.
earth warms air.
liquid/gas transfers heat.

Explanation:

• Conduction: It is heat transfer through direct contact. So "Touch transfers heat" belongs here.
• Convection: It occurs in fluids (liquids and gases) and involves the movement of the fluid itself. "Warm air rises" and "Liquid/gas transfers heat" and "Earth warms air" (as air is a gas and when Earth warms it, the warm air can rise - a convective process) are convection.
• Radiation: It is heat transfer via electromagnetic waves. "Sun heats Earth" (sunlight is electromagnetic radiation) and "Waves transfer heat" (electromagnetic waves transfer heat in radiation) are radiation.

Answer:

• Conduction: Touch transfers heat.
• Convection: Warm air rises, Earth warms air, Liquid/gas transfers heat.
• Radiation: Sun heats Earth, Waves transfer heat.