Energy Review

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

What kind of heat transfer happens when the sun is heating your body?

• Conduction
• Radiation
• Convection
• Density

Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction
• convection
• radiation
• Insolation 

Heat always transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high
• It can travel high to low and low to high. 

Warm air is __________ dense than cold air and __________ creating convection currents.

• more, rises
• less, rises
• more, sinks
• less, sinks

A group of friends gather around a fire to stay warm demonstrates which type of heat transfer?

• conduction
• convection
• radiation

What type of heat transfer is happening when a hot iron is placed on a chocolate bunny?

• conduction
• convection
• radiation

What is thermal energy?

• Air vibrations that we can hear.
• The total kinetic energy of tiny particles that make up matter.
• Energy stored in bonds between atoms. 

____________ energy is energy that is stored.

• Kinetic
• Sound
• Potential
• Light

Energy can not be created or destroyed, only converted from one form to another.

• true
• false