Convection and Density

Front

What is the definition of density?

Back

Density is the amount of matter (mass) packed into a space (object).

Front

What happens to cool/cold air in terms of pressure?

Back

Cool/cold air that sinks towards the Earth's surface creates a high pressure area.

Front

Which substance would float in water? (Hint: water has a density of 1g/cm³)

Back

Cork would float in water.

Front

What causes warm air to rise in a room?

Back

Warm air rises because of convection.

Front

What is the initial source of energy that creates winds?

Back

The sun is the initial source of energy that creates winds.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases).

Front

How does density affect whether an object will float or sink?

Back

An object will float if its density is less than the density of the fluid it is in; it will sink if its density is greater.

Front

What is the relationship between temperature and density in fluids?

Back

As temperature increases, the density of a fluid typically decreases, causing it to rise.

Front

What is a high pressure area?

Back

A high pressure area is created when cool air sinks, leading to more air molecules in a given space.

Front

What is the role of the sun in the water cycle?

Back

The sun provides energy for evaporation, which is a key part of the water cycle.