Question

1. read each description. put an \x\ under each form of heat transfer that the description correctly describes.

transfers heat from high temperature to lower temperature items.
best transferring energy in solids
transfers energy by direct contact
best transferring energy in liquids and gases
can travel through space (a vacuum)
transfers energy by circular motion due to differences in density
travels as waves

Explanation:

• Transfers heat from high temperature to lower temperature items: All three heat transfer methods (conduction, convection, radiation) follow the principle of heat moving from higher - temperature regions to lower - temperature regions.
• Best transferring energy in solids: Conduction is the dominant heat transfer mechanism in solids as it relies on direct molecular contact.
• Transfers energy by direct contact: Conduction occurs when there is direct contact between particles.
• Best transferring energy in liquids and gases: Convection is the main way heat is transferred in liquids and gases. It involves the circular motion of the fluid due to density differences.
• Can travel through space (a vacuum): Radiation is the only heat transfer method that can travel through a vacuum. It travels as electromagnetic waves.
• Transfers energy by circular motion due to differences in density: This is the description of convection.
• Travels as waves: Radiation travels as electromagnetic waves.

Answer:

Description	Conduction	Convection	Radiation
Best transferring energy in solids	X
Transfers energy by direct contact	X
Best transferring energy in liquids and gases		X
Can travel through space (a vacuum)			X
Transfers energy by circular motion due to differences in density		X
Travels as waves			X