8Ic Heating Fluids 8Id Changing States

Liquids and gases are fluids.

• True.

• False.

Convection is .....................

• the transfer of heat.

• the transfer of heat in solids.

• the transfer of heat energy through a vacuum.

• the transfer of heat in fluids.

What happens to a fluid when it is heated?

• The particles get bigger.

• The particles get smaller.

• The particles move around more and take up space.

• The fluid gets denser.

Why does the cold air near the ice lolly move downwards?

• It is colder and denser than the air near it.

• It is warmer and denser than the air near it.

• It is colder and less dense than air near it.

• It is warmer and less dense than the air near it.

Which drawing shows how the water will move in the beaker?

• 
• 
• 
• 

When liquid water changes into steam: it is

• condensing.

• evaporating.

• melting.

• dissolving.

When molten wax is freezing and turning back into a solid, what happens to the temperature of the wax?

• It goes up.

• It stays the same.

• It goes down.

• It all depends on how hot the wax was to start with.

The process by which a gas changes to a liquid.

• evaporation.

• condensation.

• melting.

• freezing.

The temperature at which water turns into a solid.

• 0 degrees Celsius.

• 50 degrees Celsius.

• 100 degrees Celsius.

• 150 degrees Celsius.

The temperature at which water turns into a gas.

• 0 degrees Celsius.

• 50 degrees Celsius.

• 100 degrees Celsius.

• 150 degrees Celsius.