7.8ab

Where is thermal energy transfer by conduction present in the picture provided? Select two correct answers.

• The contact between the grill and the pot.

• The fire heating the pot.

• The heating of the lid on the pot.

• The cooking of the stew in the pot.

• The warm steam above the pot.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A student investigates the thermal energy transfer of two liquids. The student graphs the temperature of the liquids over time. Which statement best describes the thermal energy transfer of the liquids?

• Thermal energy from the cooler liquids is transferred to the warmer environment until the liquids reach thermal equilibrium.

• Thermal energy from the warmer liquids is transferred to the cooler environment until the liquids reach thermal equilibrium.

• Thermal energy from the environment is increasing the temperature of the liquids.

• Thermal energy from the warm liquids is decreasing the temperature of the environment.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A group of students is camping, and they build a campfire. They decide to roast marshmallows. They hold the marshmallows away from the fire until they are the perfect golden-brown color. What type of thermal energy transfer allowed the marshmallows to cook without touching the fire?

• conduction

• radiation

• convection

• waves

  (sun)

Tags

NGSS.MS-PS3-4

The heat transferred from the Sun to the Earth by waves is called ________.

• conduction

• radiation

• convection

Tags

NGSS.MS-PS3-3

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Ask a question

Communicate results

Conduct experiment

Analyze results

Form a hypothesis

All of the following are examples of convection currents, except:

• Warm air rising in a house

• Cold water sinking to the bottom of the lake

• Water flowing through pipes

• Steam from hot soup rising into the air

What type of heat transfer occurs at point B in the diagram?

• Conduction; heat rises, cold sinks

• Convection; heat rises, cold sinks

• Conduction; cold rises, heat sinks

• Convection; cold rises, heat sinks

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? 

• Sample 2 to Sample 4

• Sample 1 to Sample 2

• Sample 3 to Sample 4

• Sample 1 to Sample 3

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

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-PS3-3

NGSS.MS-PS3-4

A beaker of 98°C liquid was set on a table in a 72°C lab. A group of students monitored the temperature of the liquid for 45 minutes but had to leave class when the bell rang. When they return tomorrow, what will be the temperature of the liquid?

• The temperature of the liquid will be 0°C because heat will continue to leave the beaker until it reaches freezing.

• The temperature of the liquid will be 72°C because once it reaches the temperature of the room, it will be at equilibrium.

• The temperature of the liquid will be 98°C because heat from the lab will start to warm it back up.

• The temperature of the liquid will be 0°C because that is the lowest temperature it can reach.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5