Thermal energy and heat transfer

A cold metal spoon is placed in a bowl of hot soup. Which best describes how the spoon is affected?

• The heat from the soup does not affect the temperature of the spoon.

• The heat from the soup is conducted through the spoon, making the spoon warmer.

• The cold air in the room radiates into the soup, cooling it, and keeping the spoon cool.

• The cold from the spoon is conducted into the soup, causing the soup to cool to the same temperature as the spoon.T

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which is an example of conduction?

• Steam is rising from a cup of hot coffee.

• A hot biscuit is warming the plate it is on.

• The sun is shining through a window and warming a table.

Tags

NGSS.4-PS3-2

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

• Conduction
• Radiation
• Convection
• Density

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

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

• more
• less

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Transfer of thermal energy through "space"

• conduction
• convection
• radiation

A chair is several feet from a fireplace. The side of the chair facing the fireplace gets warm due to

• conduction
• convection
• radiation

"Lava lamps" contain colored liquids. These liquids form globs that rise to the top due to

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

Which box has a higher density?  

• Box A
• Box B
• cannot be determined
• they are the same