Thermal Energy Practice Flashcard

Front

What state of matter has molecules that are in constant contact but can move around freely?

Back

Liquid

Front

What happens to the average kinetic energy and temperature of an object when its molecules begin to move faster?

Back

The average kinetic energy will increase and the object's temperature will rise.

Front

What is the term for the phenomenon when atoms are heated, causing them to move faster and get farther apart?

Back

Thermal Expansion

Front

In which state of matter do molecules move the slowest?

Back

Solid

Front

How does a thermometer work?

Back

Liquids expand when heated and contract when cooled.

Front

What is the term for the process where molecules come closer together when cooled?

Back

Thermal Contraction

Front

What is the primary form of energy associated with the motion of molecules?

Back

Kinetic Energy

Front

What is thermal equilibrium?

Back

It is the state in which two objects in contact with each other reach the same temperature.

Front

What happens to the volume of most substances when they are heated?

Back

Most substances expand when heated.

Front

What is the difference between conduction, convection, and radiation?

Back

Conduction is heat transfer through direct contact, convection is heat transfer through fluid movement, and radiation is heat transfer through electromagnetic waves.