# What is pressure what causes it Bill Nye?

## What is pressure what causes it Bill Nye?

When you push something, you’re using pressure. Pressure depends on two things – the power of the push and the area that’s being pushed on. A push on a small area makes more pressure than the same size push on a big area. Pushing hard on something creates more pressure than a little nudge, naturally.

Where is the most pressure in a dam Bill Nye?

The pressure at the top of the dam is_________than the pressure at the bottom. In the water pressure jet shop the pressure of the water is________pounds per square inch. At this pressure, the water is traveling at Mach_____(three times the speed of sound).

### When pressure is spread out over an area it makes a?

Pressure is a way of measuring how much force is acting over an area. A strong push on a small area creates high pressure, while a weak push spread out over a large area creates only a little pressure.

Do hovercrafts float because of pressure?

A hovercraft uses an imbalance of air pressure to make itself float above a surface. It takes air and shoots it under the bottom of itself, kind of like a windy day. With this fast-moving air hitting the ground, it creates a more significant amount of pressure around it.

#### What’s the difference between gravity and atmospheric pressure?

Gravity is a property of anything with mass. It’s one of the four fundamental forces in the universe, and it’s caused by an object bending spacetime around itself. When talking about atmospheric pressure, we’re talking about the average force per unit area the gas molecules are exerting on objects in the air.

What is atmospheric pressure on human body?

the typical air pressure on the entire body is 1 atm = 760 mm Hg; the total blood pressure is therefore: Ptot 120 + 760 mm Hg = 880 mm Hg. for a diver at a water depth of 30 m the external pressure is: P = 103 kg/m9.

## Why does water pressure increase?

This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere .

Does energy and atoms change the phases of matter?

Energy and atoms do/do not change the phases of matter. Absolute Zero is when energy/molecules stop moving. A soda is liquid that contains__________________________ gas to make it bubble and fizz.

### What is the relation between pressure force and area?

Answer: Pressure is directly proportional to force and inversely proportional to area. Explanation: Pressure is defined as the ratio of force applied to the area of cross section.

How do you calculate change in pressure?

d p d y = − ρ g . This equation tells us that the rate of change of pressure in a fluid is proportional to the density of the fluid. The solution of this equation depends upon whether the density ρ is constant or changes with depth; that is, the function ρ(y).

#### How high can a hovercraft hover?

These fans blow air underneath the hovercraft to lift it off of the ground. How high above the ground can these vehicles hover? This can range from six inches to over seven feet.

What does a hovercraft do?

A hovercraft, also known as an air-cushion vehicle or ACV, is an amphibious craft capable of travelling over land, water, mud, ice, and other surfaces. Hovercraft use blowers to produce a large volume of air below the hull, or air cushion, that is slightly above atmospheric pressure.