Temperature and Thermal Energy

Question 1

Which best describes thermal energy?

Revolt · Accepted Answer

It is the portion of internal energy that can be transferred from one substance to another.

Question 2

Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?

Revolt · Accepted Answer

Thermal energy from the coffee is transferred to the mug.

Question 3

Which is equal to a temperature of 50°F?

Revolt · Accepted Answer

10°C

Question 4

A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to drop?

Revolt · Accepted Answer

The kinetic energy of the water molecules decreases.

Question 5

Barbara is converting 78°F to degrees Celsius. First, she subtracts 32 from 78. What is the next step?

Revolt · Accepted Answer

multiply 46 by 5/9

Question 6

Which shows the potential energy of particles in three substances, from least to greatest?

Revolt · Accepted Answer

gas, liquid, solid

Question 7

What happens when heat is removed from water?

Revolt · Accepted Answer

The kinetic energy of the water particles decreases.

Question 8

A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to rise?

Revolt · Accepted Answer

The molecules in the thermometer’s liquid spread apart.

Question 9

What happens when the thermal energy of a substance increases?

Revolt · Accepted Answer

Both the motion of the particles in the substance and the temperature of the substance increase.

Question 10

The diagrams show the movement of particles for two substances.Which best compares the temperatures of the substances?

Revolt · Accepted Answer

Substance X has the highest temperature because its particles have more kinetic energy.

Temperature and Thermal Energy Answers