Heat Transfer_CKHS

What is thermal energy?

• Energy from the sun

• Energy from movement of atoms

• Energy from electricity

• Energy stored in batteries

What causes an ice cube to melt on a warm sunny day?

• Heat transfer from the sun

• Melting due to the ice's age

• Pressure from the atmosphere

• Cold transfer from the surroundings

Which of the following is NOT a method of heat transfer?

• Conduction

• Convection

• Radiation

• Insulation

What is required for conduction to happen?

• Light from the sun

• Use of insulators

• Presence of a liquid

• Contact between objects

Why do wooden or plastic-handled spoons not get as hot as metal spoons?

• They are better conductors

• They are not affected by heat

• They absorb less heat

• They are better insulators

How does convection transfer heat in fluids?

• Through circulation currents

• By direct contact

• By staying still

• Through electromagnetic waves

What is radiation in the context of heat transfer?

• Transfer of heat through direct contact

• Transfer of heat in a solid

• Transfer of heat via electromagnetic waves

• Transfer of heat through a liquid

What kind of light do humans radiate?

• Visible light

• Infrared light

• Ultraviolet light

• X-rays

Why can't humans see infrared light?

• It is too bright

• It moves too fast

• It is absorbed by the skin

• It is too low-energy

What role does convection play in the movement of Earth's tectonic plates?

• It creates circulation currents in the asthenosphere

• It heats the plates up

• It cools the plates down

• It stops the plates from moving