How do you explain air pressure?

How do you explain air pressure?

The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.

What is air pressure in your own words?

Describe air pressure in your own words. It is the pressure exerted on Earth’s surface due to the weight of the overlying air molecules. Mercury flows out of the tube to balance the weight of the mercury column by the pressure exerted on the mercury in the dish.

When air pressure increases the mercury in a barometer?

Suppose the height of a column in a mercury barometer is decreasing. What is happening? When air pressure increases, the mercury in the tube rises. When air pressure decreases, so does the height of the mercury column.

What factors play a role in air pressure?

Factors Affecting Air Pressure:

• Temperature: As the temperature increases, air expands because of which its density decreases which results in low pressure.
• Height from Sea Level:
• Moisture in Air (Humidity):
• Gravitation of Earth:
• Rotation of Earth:

What are 3 things that can change air pressure?

The 3 main factors that affect barometric (air) pressure are: Temperature of air. Altitude or Elevation. Moisture.

What are the three factors that influence air pressure?

1)The 3 main factors that affect barometric (air) pressure are:

• Temperature.
• Altitude or Elevation.
• Moisture ow water vapour.

What things affect pressure?

Summary. An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure.

What is the relation between temperature and air pressure?

The relationship between the two is that air temperature changes the air pressure. For example, as the air warms up the molecules in the air become more active and they use up more individual space even though there is the same number of molecules. This causes an increase in the air pressure.