Conduction, Convection, Radiation Quiz

What is the definition of CONVECTION

• When heat transfers through waves.
• When heat transfers from objects that are touching.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• Heat traveling from the sun

Walking on the warm sand sand with your bare feet demonstrates this type of heat transfer. 

• conduction
• convection
• radiation

Which is an example of conduction?

• Steam is rising from a cup of hot coffee.
• A hot biscuit is warming the plate it is on.
• The sun is shining through a window and warming a table.
• Grilling a hot dog over a campfire.

Radiation is when energy is transferred...

• by contact
• by flow of fluid in liquid or gas
• by waves or rays
• this is not an energy-transfer process

What is the original source of most of the energy that people use?

• Energy that reaches Earth by radiation from the sun.
• Energy that reaches the earth by convection from the sun.
• Energy that reaches the earth by radiation from the core.
• Energy that reaches the earth by conduction from the core.

Higher temperature means faster moving molecules

• True
• False

Which best describes heat transfer by radiation?

• a slice of bacon frying in a pan
• a pot on a stove boiling water
• a camp fire warming hands
• a hot air balloon

Heat is the transfer

• of thermal energy from a cooler object to a warmer object

• of thermal object from a warmer object to a cooler object.

• Heat doesn't transfer

• Freezing to Cold

The way the heat is moving from the hot coffee is called...

• convection
• radiation
• insulation
• conduction

Which describes what can happen as a result of radiation?

• A piece of wood burns in a fire.

• A shirt is hot after having been ironed.

• A can of soup is heated in a pot on a stove.

• A car’s inside temperature rises to over 100 degrees on a sunny day.