Amplify Thermal Energy Chapter 2

Front

What happens to the temperature of a sample if the molecules that make it up speed up?

Back

The temperature of the sample increases.

Front

When things get hotter, how are their molecules moving?

Back

Faster.

Front

If the temperature of a substance is high, what can be said about the movement of its molecules?

Back

They are moving very fast.

Front

Which temperature is warmer: 75℃ or 25℃?

Back

75℃ is the warmest.

Front

True or False: The average of a set of numbers is a good representation of the whole.

Back

True.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance.

Front

How does temperature relate to the kinetic energy of molecules?

Back

Temperature is a measure of the average kinetic energy of the molecules in a substance.

Front

What is the effect of increasing thermal energy on molecular motion?

Back

Increasing thermal energy causes molecules to move faster.

Front

What is the relationship between temperature and molecular speed?

Back

As temperature increases, molecular speed increases.

Front

What is the significance of absolute zero in terms of molecular motion?

Back

At absolute zero, molecular motion theoretically stops.