Unit 5 Thermal Energy

Heat always travels from _____ to ______ objects

• hot to cold

• cold to hot

• cold to cold

• hot to hot

Tags

NGSS.MS-PS1-4

Water boiling is an example of ____

• conduction

• radiation

• density

• convection

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Heat energy traveling through empty space is an example of _____

• convection

• density

• radiation

• conduction

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

NGSS.MS-PS3-5

Four containers made of different materials, each containing water at 45º C, were set out on a table. The initial temperature of the water was recorded. The temperature of the water was also recorded 15 minutes later. Which container was the most effective at preventing heat transfer from the water to the environment?



• Container A

• Container B

• Container C

• Container D

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Thermal energy always moves from -

• large objects to small objects.

• dark objects to light objects.

• warm objects to cool objects.

• smooth objects to rough objects.

Which of the following is an example of heat transfer by conduction?

• Sunlight warming a room early in the morning

• A metal spoon getting hot in a bowl of soup

• Warm and cold water circulating in an ocean

• Hot air rising and cold air sinking on a beach

Which of the following is an example of heat transfer through radiation?

• A pot of soup warming on a hot burner

• A crayon melting on a hot sidewalk

• Beach sand getting warmed by the Sun

• An egg getting cooked in a pot of boiling water

A student notices that the saucer below a coffee cup becomes warmer after coffee is poured into the cup. Energy was transferred from -

• the cup to the saucer by conduction.

• the saucer to the cup by conduction.

• the cup to the saucer by convection.

• the saucer to the cup by convection.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Four containers made of different materials, each containing water at 30º C, were set out on a table. The initial temperature of the water was recorded. The temperature of the water was also recorded 15 minutes later. Which container was the most effective at preventing heat transfer from the water to the environment?

• Container P

• Container Q

• Container R

• Container S

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3