# Question: How Do You Explain Atmospheric Pressure To A Child?

## How do you explain air pressure to a child?

The weight of all this air weighing down on us is what’s known as air pressure.

The more air that is above us, the higher the air pressure will be.

At sea level, the average air pressure is about 15 pounds for every square inch of surface area..

## What is atmospheric pressure in simple terms?

Atmospheric pressure is a force in an area pushed against a surface by the weight of the atmosphere of Earth, a layer of air. … This is because high places do not have as much air above them, pushing down. Barometers can be used to measure atmospheric pressure. There is the same atmospheric pressure from all directions.

## How do you explain atmospheric pressure?

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. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes.

## Is water and air pressure the same?

Testing with High-Pressure Air Unlike water, which is incompressible, the air is very compressible, making it hydraulically equivalent to a large mechanical spring. … The force experienced on the interior of a pipe is the same for either air or water at 150 PSI. However, this is not the purpose of a pressure test.

## What are some examples of air pressure?

Air-pressure definitions The definition of air pressure is the force exerted onto a surface by the weight of the air. An example of air pressure is the average sea-level air pressure of 101.325 kPA. The pressure of atmospheric or compressed air.

## What are the factors affecting air pressure?

1)The 3 main factors that affect barometric (air) pressure are: Temperature. Altitude or Elevation. Moisture ow water vapour.

## How do we use air pressure in everyday life?

Applications of Pressure in Daily LifeThe area of the edge of a knife’s blade is extremely small. … Syringes are used to take blood for blood tests. … When air is sucked out of a drinking straw, the air pressure inside if decreases and the atmospheric pressure outside forces the liquid to go inside the straw.More items…•

## What are the effects of air pressure on water?

The air inside a balloon is under pressure as it is squeezed by the rubber. When you place the inflated balloon on top of the bottle, the air pressure on top of the bottle becomes higher. That pushes down on the water in the bottle, pushing it through the straw and making the fountain stronger.

## What is the value for atmospheric pressure?

1,013.25 mbarThe standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa; 1,013.25 mbar), which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

## What is the difference between air pressure and atmospheric pressure?

A: Air pressure is what you measure with a tire gauge. Atmospheric pressure is what you measure with a mercury barometer. … Pressure is the amount of force per unit area that a gas exerts on a surface.

## How does atmospheric pressure affect the body?

Barometric pressure is the weight of the atmosphere that surrounds us. Barometric pressure often drops before bad weather. Lower air pressure pushes less against the body, allowing tissues to expand. Expanded tissues can put pressure on joints and cause pain.