What is heat transfer?

• Flow of thermal energy irrespective of reservoir temperature

• Flow of energy in the form of heat from high-temperature reservoir to low-temperature reservoir

• Flow of thermal energy from low-temperature reservoir to high-temperature reservoir

• None of the above

How many different types of heat transfer exist?

• 1

• 2

• 3

• 4 or more

Heat is the transfer of _____ from one object to another due to a difference in temperature.

• Time

• Force

• Energy

• Velocity

Which of the following is a unit of measurement for heat?

• Calorie

• Joule

• BTU

• All of the above

The man's hand will immediately receive heat from the metal as the candle gradually warms it. That is called____?

• Conduction

• Convection

• Radiation

Toasting bread in a toaster is an example of

• Condensation

• Convection

• Conduction

• Radiation

"Metals" are the best____?

• Insulators of heat

• Conductors of heat

• Conductors of light

• Insulators of electricity

Quilts and jackets keep us warm by

• Trapping air

• Preventing release of heat from our body

• Heating itself up

• Maintaining body temperature

'Air' is___?

• Thermal conductor

• Thermal insulator

• Electrical conductor

• An electrolyte

Trees help in making environment?

• Cool

• Warm

• Hot

• Clean