how do air pressure, global winds belts, and ocean currents affects earths energy balance? moves warm to the tropics and cold to the polar regions. the air pressure expands and rises; creates a low pressure zone.

Warm air being light, the air at the Equator rises, creating low pressure. At the poles the cold heavy air causes high pressure to be created/formed. It is also due to the rotation of the earth.

There may be more storms near the equator than at the poles, giving rise to lower pressure zones. One effect of the Earth’s rotation is that the local “gravity” is a little less at the equator than it is at the poles for two reasons.

Equatorial regions is hotter and the air above expands, becomes less dense and rises. This produces a low pressure belt at this latitude.

As the pressure decreases, the amount of oxygen available to breathe also decreases. At very high altitudes, atmospheric pressure and available oxygen get so low that people can become sick and even die. When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation.

Absolute pressure is measured relative to absolute zero on the pressure scale, which is a perfect vacuum. (Absolute pressure can never be negative.) Gage pressure is thus zero when the pressure is the same as atmospheric pressure. (It is possible to have negative gage pressure.)

Cold, dense air squeezes its way through the warmer, less-dense air, and lifts the warm air. Because air is lifted instead of being pressed down, the movement of a cold front through a warm front is usually called a low-pressure system.

We pass out when the pressure drops below 57 percent of atmospheric pressure — equivalent to that at an altitude of 15,000 feet (4,572 meters). Climbers can push higher because they gradually acclimate their bodies to the drop in oxygen, but no one survives long without an oxygen tank above 26,000 feet (7925 m).

Above 28,000 to 30,000 feet with extra oxygen under pressure — normal consciousness and life can be sustained to 50,000 feet. Above 50,000 feet with any form of oxygen — sustained human life is not possible without a pressure suit like astronauts wear.

At a core temperature of 85.1°F most humans pass out. The heart beats only two to three times per minute, pulse and breathing are barely measurable. Once the temperature is below 68°F, death is almost certain.

A sudden change of pressure causes damage as far lower levels. Anywhere from 10 to 20 kilograms per square inch can be fatal, depending on the time it takes to wash over the body. At the high pressure shifts, the body just comes apart.

Effect on body fluids

An air bubble in the blood stream is known medically as an embolism, a dangerous medical condition in which a blood vessel is blocked, in this case, by an air bubble. An embolism of an artery can cause coma, paralysis or death depending upon its size, duration and location.

High blood pressure means there is too much pressure in the body’s blood vessels. Similar to pumping too much air into a tire or balloon, this force can be deadly, causing gradual damage to the brain, eyes, heart, and kidneys.

Hypertension, or high blood pressure, is when your blood travels through blood vessels with more force than is considered healthy. When blood pressure is high, it can damage artery and blood vessel walls over time. This leads to dangerous complications and even death if left untreated.

Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. The greater pressure at the bottom would give a greater ‘force per unit area’ on the wall.

Human beings can withstand 3 to 4 atmospheres of pressure, or 43.5 to 58 psi. Water weighs 64 pounds per cubic foot, or one atmosphere per 33 feet of depth, and presses in from all sides. The ocean’s pressure can indeed crush you.

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 .

The pressure increases about one atmosphere for every 10 meters of water depth. At a depth of 5,000 meters the pressure will be approximately 500 atmospheres or 500 times greater than the pressure at sea level.

As altitude rises, air pressure drops. In other words, if the indicated altitude is high, the air pressure is low. As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level.

The pressure at a depth of 200 meters below sea level is about 20 atmospheres greater than atmospheric pressure.

Pressure increases with depth in a liquid because of the weight of the liquid pressing down from above. For water, pressure increases 101,325 Pa (1atm) for every 10 m of depth. As a result of this pressure increase, the water volume (ΔV/V) will decrease.

Look on the main supply pipe near your water meter for a conical valve that has a bolt sticking out of the cone. To raise pressure, turn the bolt clockwise after loosening its locknut. Keep an eye on the gauge to make sure the pressure is within bounds, then retighten the locknut.