2. • The difference of air pressure is due to
unequal heating of the Earth.
• Warm air masses have fewer air molecules
than cold air masses.
3. What is the relation between
temperature and pressure ?
As the temperature increases the air particles
are far away from each other decreasing the
pressure
As the temperature increases the pressure
decreases
4. Air Pressure
• Air Pressure is a
measure of the force
of the air pressing
down on the earth’s
surface
5. Air Pressure can vary at any particular
point on the Earth depending on the
density of the air
Density = mass / volume
