6.9AB Heat Transfer

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

• A. A pot of soup warming on a hot burner

• B. A crayon melting on a hot sidewalk

• C. Beach sand getting warmed by the Sun

• D. An egg getting cooked in a pot of boiling water

In an energy transfer experiment, four blocks of different temperatures are stacked. Where would energy transfer by conduction move downward, from a higher block to a lower block?

• A. Sample 2 to Sample 4

• B. Sample 1 to Sample 2

• C. Sample 3 to Sample 4

• D. Sample 1 to Sample 3

Tags

NGSS.MS-PS3-4

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?

• A. Container P

• B. Container Q

• C. Container R

• D. Container S

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

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

• A. the cup to the saucer by conduction.

• B. the saucer to the cup by conduction.

• C. the cup to the saucer by convection.

• D. the saucer to the cup by convection.

Tags

NGSS.MS-PS1-4

5. When an egg is boiled in a pot of water on the stove, there is more than one kind of heat transfer. Heat is transferred from the stove to the pot directly since they are physically touching. Heat is also transferred from the pot to the egg, carried through the water. What two kinds of heat transfer are represented?

• A. Stove → Pot = radiation, Pot → Egg = conduction

• B. Stove → Pot = conduction, Pot → Egg = radiation

• C. Stove → Pot = convection, Pot → Egg = conduction

• D. Stove → Pot = conduction, Pot → Egg = convection

Tags

NGSS.MS-PS3-4