Thermal Energy Amplify

What is the average amount of energy for these molecules?

• 10

• 80

• 8

• 800

Geothermal power plants send water through pipes deep underground where it is hot. This causes the temperature of the water to increase.

What happens to the molecules of the water when the temperature of the water increases?

• The energy of the water molecules decreases.

• The energy of the water molecules increases.

• The cold energy of the water molecules decreases.

• More heat molecules combine with the water molecules.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Aditya is stacking some cups. The diagram above shows the cups before they touch each other. After the cups have been touching for a while, which of the two bottom cups will be cooler, and why?

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

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

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

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing?

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

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

• The energy of the molecules in the ground decreases.

• The energy of the molecules in the ground increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Jason put an apple on top of an ice pack in his lunch bag. By lunchtime the temperature of his apple had decreased. What happened to the molecules in the apple when the temperature of the apple decreased?

• The energy of the molecules in the apple decreased.

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

• The apple lost heat molecules.

• The energy of the molecules in the apple increased.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

thermal energy

• The total energy of all the particles of an object measured with temperature.

• the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

• the energy that it possesses due to its motion.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What is the BEST definition of "temperature"?

• the amount of movement that atoms store

• The transfer of energy from one form to another

• A measure of the average speed of the molecules of a substance.

• A measure of how hot or cold something is

Tags

NGSS.MS-PS1-4

What is the primary effect of increasing thermal energy on the molecules of a substance?

• The molecules move slower.

• The molecules move faster.

• The molecules become larger.

• The molecules change color.

Tags

NGSS.MS-PS1-4

Which of the following is a real-world application of thermal energy amplification?

• Solar panels converting sunlight to electricity.

• Wind turbines generating electricity.

• Geothermal heating systems.

• Hydroelectric dams.

Tags

NGSS.MS-PS3-3

In an experiment, a metal rod is heated at one end. What happens to the thermal energy?

• It stays at the heated end.

• It moves to the cooler end.

• It dissipates into the air.

• It decreases at the heated end.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4