Temperature and Thermal Energy

Question 1

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 2

Which is equal to a temperature of 50°F?

Revolt · Accepted Answer

10°C

Question 3

What is the temperature, in degrees Celsius, of a substance with a temperature of 49K?

Revolt · Accepted Answer

–224°C

Question 4

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 5

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.

Question 6

The diagram shows the scales used for recording temperatures. The labels for the scales are missing.

Revolt · Accepted Answer

W: FahrenheitX: CelsiusY: Kelvin

Question 7

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 8

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 9

Sayid recorded the temperatures of four substances in a chart.

Revolt · Accepted Answer

The particles in substance W have a lower average kinetic energy than the particles in substance X.

Question 10

Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?

Revolt · Accepted Answer

internal

Temperature and Thermal Energy Answers