Thermal Energy

Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following situation?

You put a heating pad on your back after exercising.

• Feeling a metal wire get warmer as you roast a marshmallow over a fire.

• Warm air rising in a room where the air is moving.

• Cold water sinking in a pot of water being warmed up on the stove.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Identify the correct type of heat transfer for A, B, and C in the picture. Using the picture, cite evidence for your choices.

Materials Containing Air are usually good conductors

• True

• False

Heat is transferred between objects when they have a difference in temperature

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A substance that does not conduct heat well is an insulator

• True

• False

Tags

NGSS.MS-PS3-3

A spoon is sticking out of a cup of hot coffee. the spoon will be hot to touch.

• True

• False

Tags

NGSS.MS-PS1-4

Metals are not good conductors of heat

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

1 can be seen as the hot water warms and rises and cools, 2 can be seen as heat moves from the hot plate and through the glass flask, and 3 can be seen by holding a hand over the hot plate and feeling warmth without touching it.

• 1. 1. Convection

  2. 2. Conduction

  3. 3. Radiation

• 1.Radiation

  2. 2. Convection

  3. 3. Conduction

• 1. 1. Conduction

  2. 2. Radiation

  3. 3. Convection

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which would be best categorized as heat transfer by conduction?

• Feeling the heat from a light bulb with your hand when touching the bulb.

• Warming your body under the sun in summer.

• Feeling the heat from a light bulb while holding your hand from 6 inches away.

Tags

NGSS.MS-PS3-3

Which statement would be the best evidence that heat transfer through radiation has occurred and why?

• At several feet from a fire, you still feel the heat. Heat is transferred through the air

• On a windy day, you feel colder. This is because more heat is removed from your body.

• 
  An oven uses fans to heat up the food inside faster. Radiation is the most efficient form of heat transfer.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS4-2