Heat transfer and energy transformations

A chair is placed several feet from a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of -

• Conduction

• Radiation

• Convection

• Density

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.

Tags

NGSS.MS-PS1-4

Which of the following is an example of convection?

• A hair dryer is drying up your hair.
• When the AC or heater changes the temperature.
• When a car engine turns hot after being turned on.
• When you are making soup and the water is rising and lowering.

Tags

NGSS.HS-PS3-4

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

• convection
• radiation
• insulation
• conduction

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

• conduction
• convection
• radiation
• Insolation 

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

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. 

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is the definition of RADIATION?

• When heat transfers through the form of rays, waves, or particles.
• 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

Tags

NGSS.MS-PS3-3

NGSS.MS-PS4-1

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

• conduction
• convection
• radiation

Tags

NGSS.MS-PS3-4

How is CONDUCTION different from CONVECTION?

• Conduction happens in fluids ; convection needs direct contact.

• Conduction needs direct contact; convection is heat transferring in fluids

• Conduction uses invisible waves; convection uses fluids.

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

• more
• less

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6