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gravity
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Why does air weight anything?
Air has weight because it is made up of molecules that have mass. Gravity pulls these molecules down toward the Earth's surface, causing them to exert a force known as atmospheric pressure. The weight of air can be measured and is typically around 14.7 pounds per square inch at sea level.
What pulls fresh water toward the ocean?
air
Why does air have preasure?
Air has pressure due to the weight of the air molecules above it pushing down. The force of gravity pulls the air molecules towards the Earth's surface, causing them to compress and create pressure. Atmospheric pressure decreases with increasing altitude as there are fewer air molecules above.
Why doesn't our air get pulled out into space?
Gravity pulls the air down toward the ground, just like it pulls down everything else.
Is air pressure a result of gravity?
Yes, air pressure is a result of gravity. The weight of the air molecules above a specific area creates pressure at that point. Gravity pulls the air molecules towards the Earth's surface, causing them to be compressed and create pressure.
Gravity and what are two forces on earth that act on object?
Gravity is the force that pulls objects toward the center of the Earth, while air resistance is a force that acts in the opposite direction, slowing down objects as they move through the air.
Why do you not float into the air?
We do not float into the air because of gravity, the force that pulls objects toward each other. Gravity keeps us grounded on the Earth's surface by attracting us toward its center. If gravity didn't hold us down, we would indeed float away into space.
What forces act upon a meteor as it falls toward Earth?
As a meteor falls toward Earth, the main forces acting on it are gravity and air resistance. Gravity pulls the meteor downward, accelerating its descent. Air resistance, or drag, counteracts this motion by pushing against the meteor as it moves through the atmosphere, slowing it down. These forces together determine the meteor's speed and trajectory as it nears the Earth's surface.
Why is air pressure greatest at the Earth's surface (the Troposphere answer?
Air pressure is greatest at the Earth's surface, particularly in the troposphere, due to the weight of the air above pressing down on it. The air molecules are denser near the surface because gravity pulls them closer to the Earth, resulting in higher pressure. As you move higher in altitude, there are fewer air molecules above, leading to a decrease in pressure.
Why is there most air closer to the surface?
Most of the Earth's atmosphere is concentrated near the surface due to gravity. The force of gravity pulls air molecules towards the Earth, making the air denser at lower altitudes. As you move higher in the atmosphere, the air becomes less dense because there are fewer air molecules present.
Does air molecules escape into space?
Air molecules do escape into space it depends on how heavy or hoe light they are. However, lighter molecules of air have greater velocities while heavy molecules of air has less velocities were gravity pulls the air downwards.
What cause air pressure?
Air pressure is caused by the weight of the air above us pressing down on the air below. This pressure is a result of Earth's gravity pulling the air molecules towards the surface. Temperature changes and weather systems can also affect air pressure.
