Week 2.1 Thermal Energy Review

Thermal energy is caused by ________.

• movement of the particles

• spacing of the particles

Answer explanation

The faster the particles move, the hotter the matter becomes.

Tags

NGSS.MS-PS1-4

Match the Thermal Energy Word Association

• Heat passes between solids

• Conduction

• Heat passes through space in waves

• Radiation

• Heat passes between liquids and gasses

• Convection

Answer explanation

Conduction is thermal energy that passes when a solid touches a solid.

Convection is thermal energy in liquids and gases.

Radiation is thermal energy that passes through space as waves.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What is a conductor?

• Does NOT allow energy to pass through.

• Allows energy to pass through.

Answer explanation

All metals are conductors because they allow energy/heat to pass through.

Which of the following objects is a conductor? (Choose more than one)

• Aluminum

• Plastic

• Copper

• Fabric

Answer explanation

ALL METALS are conductors.

Other examples: NICS, Silver, Gold, etc.

Tags

NGSS.MS-PS2-3

What is an insulator?

• Does NOT allow energy to pass through.

• Allows energy to pass through.

Answer explanation

Insulators DO NOT allow energy to pass through.

Which of the following is an insulator? (choose more than one)

• Silver

• Wood

• Foam

• Gold

Answer explanation

Insulators prevent the conduction of thermal energy.

Other examples: plastic, rubber, fabric, etc.

Tags

NGSS.MS-PS3-3

Which of the following is an example of conduction?

• Campfire

• Air conditioner and heater.

• Burning your hand with the monkey bars.

• Sunburn

Answer explanation

Conduction is heat transfer by solid touching solids.

Someone touching a hot monkey bar is conduction.

Which of the following is an example of convection?

• Burning your hand with the monkey bars

• Campfire

• Air Conditioner and Heater

• Sunburn

Answer explanation

Convection is thermal/heat energy passing between liquids or gases.

The air conditioner and heater transfers thermal/heat energy through the air (gas).

Tags

NGSS.MS-ESS2-6

Which of the following is an example of radiation? (Choose two)

• Sunburn

• Burning your hand on the monkey bars.

• Air conditioner and heater.

• Campfire

Answer explanation

Radiation is thermal/heat energy that transfers through space as waves.

A campfire heats through space as waves.

A sunburn created by the sun travels through space as waves.

A cold drink left in the sun gets warm. What kind of thermal energy transfer is this?

• conduction

• convection

• convection

• radiation

Answer explanation

The heat transfer is from the sun to the drink travels through space in waves.

Radiation is heat energy transferring through space in waves.