Thermal Energy Unit

Front

What is a measure of the average kinetic energy of the particles in a material?

Back

temperature

Front

The liquid in a thermometer ______________ as the temperature increases.

Back

expands

Front

The most common temperature scale used in the world where water freezes at 0 degrees and boils at 100 degrees is called the __________________ scale.

Back

Celsius

Front

The movement of thermal energy from an object at a higher temperature to an object at a lower temperature is called ____________.

Back

heat

Front

Heat always moves from ____________ objects to ______________ objects.

Back

warmer, cooler

Front

Heat transfer stops when the objects have the same temperature.

Back

True

Front

An increase in the volume of a substance when the temperature increases is called ___________________________________.

Back

thermal expansion

Front

Thermal energy keeps moving away from warmer objects to cooler objects until both are the same temperature.

Back

True

Front

When molecules slow down their movement, the ________________

Back

space between them decreases making the substance contract.

Front

When matter cools, its molecules ________________

Back

move slower