conduction, Convection, Temperature and Heat

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

Conduction requires

• Electricity

• the electromagnetic spectrum and particles

• air or water flow

• direct contact

Tags

NGSS.MS-PS1-4

Heat transfer always moves ...

• cold to hot

• east to west

• hot to cold

• north to south

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

If you walk barefoot on hot asphalt, energy is transferred by which process?

• Convection

• Radiation

• Conduction

• Reflection

The following diagram shows water in contact with an ice cube and warmer air.

Which way will energy flow?

• From the air to the water

• From the water to the air

• From the ice cube to the air

• From the ice cube to the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Energy is transferred as heat between two objects of ___________ temperatures.

• differing

• same

Tags

NGSS.MS-PS1-4

Which direction is heat flowing in the picture?

• from the hand to the ice
• from the ice to the hand
• heat is not being transferred
• there is no way to tell

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The transfer of heat energy by direct contact, or touch, is __________________?

• radiation
• convection
• conduction
• greenhouse effect

Where do we see conduction in a pot of boiling water on the stove?

• The water heats up by touching the hot, metal pot.

• The steam from the hot water rises out of the pot.

• The heat from the fire can be felt on all sides.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If two objects have different temperatures, heat will flow from the cooler object to the warmer one.

• True
• False

Tags

NGSS.MS-PS1-4