Amplify Thermal Energy Critical Juncture Mock Assessment

Why do molecules change speed?

• Because of changes in temperature.

• Because they like to move faster sometimes.

• Because they run out of energy.

• Because they are always at the same speed.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

What happens to the molecules of an object when it gets hotter?

• The molecules stop moving.

• The molecules move slower and lose energy.

• The molecules move faster and have more kinetic energy.

• The molecules disappear

Tags

NGSS.MS-PS1-4

What happens to the molecules of an object when it gets colder?

• The molecules stop moving.

• The molecules move slower and have less kinetic energy.

• The molecules move faster and have more energy.

• The molecules disappear.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If you have a mug of hot water and mug of cold water, you can infer that the hot one has

• a higher temperature, and therefore, faster molecules and more kinetic energy.

• a lower temperature, and therefore, slower molecules and less kinetic energy.

• a higher temperature, and therefore, slower molecules and less kinetic energy.

• a lower temperature, and therefore, faster molecules and more kinetic energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Maria placed a cold drink can on a countertop on a hot day. By the time she came back, the temperature of the can had increased. What happened to the molecules in the can when the temperature of the can increased?

• The cold energy of the molecules in the can increased.

• The can lost heat molecules.

• The energy of the molecules in the can decreased.

• The energy of the molecules in the can increased.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A warm cup of coffee sits on a cold table. Over time, the table starts to warm up. What happens to the molecules in the table when its temperature increases?

• The energy of the molecules in the table increases.

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

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

• The energy of the molecules in the table decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

An architect is stacking pieces of plastic to make two columns in a model building. The diagram above shows the pieces of plastic before they touch each other. Use the information in the diagram to answer the question. After they have been touching for a while, which of the two top plastic pieces will be cooler, and why?

• The larger top plastic piece will be cooler than the smaller top plastic piece. It started with more total energy, so less energy had to transfer for both pieces in the stack to reach the same total energy.

• The larger top plastic piece will be cooler than the smaller top plastic piece, because the energy that transferred to it was spread out over more molecules.

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

• The smaller top plastic piece will be cooler than the larger top plastic piece, because less energy has to transfer for the molecules to reach the same temperature as the molecules of the bottom plastic.

Tags

NGSS.MS-PS1-4

Why does the transfer of energy between two things stop?

• When one thing becomes colder than the other.

• When both things have the same amount of energy.

• When the energy runs out.

• When the energy is created.

Tags

NGSS.MS-PS3-5

What is the primary method by which thermal energy is transferred in fluids?

• Conduction

• Convection

• Radiation

• Diffusion

Tags

NGSS.MS-PS1-4

Which of the following best describes the critical juncture in a thermal energy system?

• The point at which energy input equals energy output

• The point at which the system reaches maximum temperature

• The point at which the system undergoes a phase change

• The point at which thermal energy is no longer transferred

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4