Thermal Energy Unit Assessment

What direction will the energy transfer?

• 
• 

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

In some places, hot water from underground can shoot up into the air through a hole in the ground. When this happens, the ground surrounding the water increases in temperature. What happens to the molecules in the ground when the temperature of the ground increases?

• More heat molecules combine with the molecules in the ground.

• The energy of the molecules in the ground decreases.

• The energy of the molecules in the ground increases.

• The cold energy of the molecules in the ground decreases.

Tags

NGSS.MS-PS1-4

Which object has a higher temperature before touching?

• The top object

• The bottom object

Tags

NGSS.MS-PS1-4

Lin cooked a pot of soup, then put half the soup in the freezer for a while. Now the soup in the pot is hot, and the soup in the freezer is cold. What is the difference between the molecules of the soup in the pot and the molecules of the soup in the freezer?

• The molecules of the soup in the pot are moving and the molecules of the soup in the freezer are not moving.

• The molecules of the soup in the pot are moving faster than the molecules of the soup in the freezer.

• There is no difference because all of the soup is made of the same type of molecules.

• The molecules of the soup in the freezer are smaller than the molecules of the soup in the pot.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Rick and Brenda are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree’s potato has a high temperature. What is the difference between the molecules of the two potatoes?

• There is no difference because both potatoes are made of the same type of molecules.

• The molecules of Rico’s potato are smaller than the molecules of Bree’s potato.

• The molecules of Bree’s potato are moving and the molecules of Rico’s potato are not moving.

• The molecules of Bree’s potato are moving faster than the molecules of Rico’s potato.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What direction will the energy transfer?

• 
• 

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Engineers design computers to cool down quickly so they do not break. What happens to the molecules in a computer when the temperature of the computer decreases?

• The energy of the molecules in the computer decreases.

• The energy of the molecules in the computer increases.

• The cold energy of the molecules in the computer increases.

• The computer loses heat molecules.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the bottom pans will be cooler after touching for a while?

• The larger bottom pan (#1) will be cooler than the smaller bottom pan, because the energy that transferred to it will have spread out over more molecules.

• Both pans will be the same temperature because both of the top pans had the same amount of energy to transfer and the molecules in the bottom pans start with the same energy.

• The smaller bottom pan (#2) will be cooler than the larger bottom pan, because less energy has to transfer for the molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When will the heat stop transferring?

• 20

• 30

• 40

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

All 3 objects are heated to the same temperature. Which one will cool off fastest?

• 50 ml

• 100 ml

• 150 ml

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4