Heat Flow Review

What is the transfer of heat by direct contact?

• conduction
• convection
• radiation

Betty knows that different types of energy are produced by many objects around the house, such as a light bulb.
Which types of energy does the bulb give off?

• heat and electric
• light and mechanical
• light and heat
• electric and light

A hairdryer is an example of heat being produced by ____________.

• Electricity
• Burning
• Friction

Heat only moves from cold objects to hot objects.

• True
• False

Heat is a form of thermal energy.

• True
• False

Which is a good conductor?

• Wood
• Plastic
• Metal

Insulators allow heat to easily pass through objects.

• True.
• False.

An ___________________________ insulates the transfer of heat energy and does NOT allow heat to move easily through them.

• Conductor
• Insulator

Is this item a conductor or insulator?

• conductor

• insulator

Which is a source of heat energy we cannot live without?

• fuel

• sun

• food

• light bulbs