Conduction, Convection and Radiation

In convection, what occurs?

• Hot air/fluid rises, due to it being more dense than cold air.
• Hot air/fluid rises due to it being less dense than cold air.
• Hot air/fluid falls, while cold air rises.
• Cold air/fluid remains stationary.

Tags

NGSS.MS-ESS2-6

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.

This is a lava lamp. When the light bulb heats the wax, the wax rises. When the wax cools, it falls. This cycle of rising/falling is an example of:

• Conduction.
• Convection.
• Radiation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• conduction
• convection
• radiation

Ironing a shirt is an example of...

• condensation
• conduction
• convection
• radiation

The Gulf Stream is a current that brings warm ocean water from the south to the north. What type of heat transfer is this?

• conduction
• convection
• radiation
• Insolation 

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS3-4

Transfer of thermal energy through "space"

• conduction
• convection
• radiation

Jackson likes to cook but is always in a hurry. He needs a pot that will cook his food quickly. Which is the best material for his cooking pot?

• copper
• glass
• plastic
• wood

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which best explains why a hot air balloon floats?

• The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.
• The heated air expands to fill the balloon. The air in the balloon is now heavier than the surrounding air, causing the balloon to rise.
• The heated air contracts to fill the balloon. The air in the balloon is now denser than the surrounding air, causing the balloon to rise.
• The heated air contracts to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

Tags

NGSS.MS-PS1-4

Materials that conduct heat slowly are called

• Insulators
• Instigators
• Alligators
• Conductors