Changes in Temperature Practice

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance as its temperature increases.

Front

What is thermal contraction?

Back

Thermal contraction is the decrease in volume of a substance as its temperature decreases.

Front

What happens to the volume of a gas as temperature increases?

Back

The volume of a gas increases as temperature increases.

Front

What is an example of thermal contraction?

Back

A balloon filled with helium deflating in cold weather is an example of thermal contraction.

Front

How does thermal energy transfer between two beakers of different temperatures?

Back

Thermal energy moves from the area of higher temperature to the area of lower temperature.

Front

What is the relationship between temperature and volume in gases?

Back

As temperature increases, the volume of a gas increases.

Front

What is the effect of temperature on the density of gases?

Back

As temperature increases, the density of gases generally decreases.

Front

What is the principle behind a hot air balloon rising?

Back

A hot air balloon rises because the air inside it is heated, causing it to expand and become less dense than the cooler air outside.

Front

What is the term for the transfer of thermal energy through direct contact?

Back

Conduction.

Front

What is the term for the transfer of thermal energy through fluids (liquids and gases)?

Back

Convection.