60 Thermal Energy

Conduction can only occur between two objects when –

• one object is less dense than the other.
• both objects are in physical contact with each other.
• one of the objects is made of a metal.
• both objects are exactly the same temperature.

Tags

NGSS.MS-PS3-4

A snowball melted outside on a sidewalk. In terms of heat transfer, what happened to the  snowball?

• Heat was transferred from the air to the snowball through radiation. 
• Heat was transferred from the Sun to the snowball through radiation.
• Heat was transferred from the air to the snowball through conduction. 
• Heat was transferred from the Sun to the snowball through conduction.

Which of these processes, take place best in gases and liquids?

• conduction
• convection
• insulation
• radiation

what is the meaning of convection?

• cold rises heat falls
• heat
• cold
• hot rises cold falls

Ice cone melts from the sun

• convection
• conduction
• radiation

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.

Ironing a shirt is an example of...

• condensation
• conduction
• convection
• radiation

The sun shines down on this family as the play on the beach.

• conduction
• convection
• radiation

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A group of friends gather around a fire to stay warm.

• conduction
• convection
• radiation

Tags

NGSS.HS-PS3-4

Walking on the warm sand sand with your bare feet.

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4