2.04 Heat Transfer 6.9A & 6.9B

Hot coffee is stirred with a spoon; the spoon gets hot due to

• conduction

• convection

• radiation

Burning logs in the fire place produce heat energy. The dog gets warm from the fire when heat energy is transferred by

• conduction.

• the air.

• radiation.

• the flames.

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

• conduction

• convection

• radiation

Tags

NGSS.MS-PS1-4

Cooking popcorn in the the microwave is an example of

• conduction

• convection

• radiation

Tags

NGSS.MS-PS1-4

In a swimming pool, water near the surface is slightly warmer. The warm water rises because of

• conduction

• convection

• radiation

A huge rock at the state park gets hot during the day. The rock was warmed from the Sun by what type of heat transfer?

• conduction

• convection

• radiation

Tags

NGSS.MS-PS3-3

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

• conduction

• convection

• radiation

• Insolation

Answer explanation

Convection is the circulation due to different areas of temperature or heat density. The surface air is heated and then rises and cools. Once cool it circulates back to the surface to be heated in this convection cycle.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Ironing a shirt is an example of what type of heat transfer?

• condensation

• conduction

• convection

• radiation

Tags

NGSS.MS-PS1-4

What happens when ice cubes melt in a glass?

• Heat travels from the ice to the warmer water.
• No energy is transferred.
• Heat is transferred from the warmer water to the ice cubes.
• The water warms up due to the humidity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A group of friends gather around a fire to stay warm. This is heat transfer through_________.

• conduction

• convection

• radiation