Radiation, Conduction and Convection

What type of heat transfer takes place when you touch a warm mug of hot chocolate?

• Radiation

• Convection

• Conduction

• None of the above

Conduction requires

• Electricity

• the electromagnetic spectrum and particles

• air or water flow

• direct contact

If you walk barefoot on hot asphalt, energy is transferred by which process?

• Convection

• Radiation

• Conduction

• Reflection

Which direction is heat flowing in the picture?

• from the hand to the ice
• from the ice to the hand
• heat is not being transferred
• there is no way to tell

The earth receives heat energy from the sun by _______________, which is the transfer of energy as electromagnetic waves?

• radiation
• convection
• conduction
• greenhouse effect

The transfer of heat energy by direct contact, or touch, is __________________?

• radiation
• convection
• conduction
• greenhouse effect

Compared to the ocean, land heats up and cools down

• Faster
•  Slower
•  Equally
• Gradually

Where do we see conduction in a pot of boiling water on the stove?

• The water heats up by touching the hot, metal pot.

• The steam from the hot water rises out of the pot.

• The heat from the fire can be felt on all sides.

A group of friends gather around a fire to stay warm. This is an example of ________.

• conduction

• convection

• radiation

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• hotter to colder

• colder to hotter

• hotter to hotter

• colder to colder