7-Thermal Energy

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

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The cycle that powers the ocean currents, weather, and tectonic plates it called

• conduction current
• radiation
• condition current
• convection current

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

• conduction
• convection
• radiation
• Insolation 

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Heat 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. 

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Near the ceiling of a room the air is warmer.  The warm air rises because of

• conduction
• convection
• radiation

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.

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

• Conduction
• Radiation
• Convection
• Density

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Which of the following is needed for convection to happen?

• Fluid(s)

• Light in the form or rays

• Electromagnetic waves

• Fire

When a pot is touching a stove that is on, what heat transfer is happening?

• Insulation

• Radiation

• Conduction

• Convection

The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 

• conduction
• convection
• radiation

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