That's gravity. Near the surface air has a density of about 1.2Kg/m^3. Air isn't that lightweight as you might think. We usually just don't lift it, but push it away, which is much easier.
The Earth's gravity.
Gravity.
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
The force that holds the atmosphere to the Earth is gravity. Gravity is the force of attraction between all objects and it keeps the gases in our atmosphere close to the Earth's surface.
the gravitational force holds its atmosphere together
Gravity holds the atmosphere from going into space
Gravity.
Gravity.
Gravity.
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
The gravitational force between the Earth and the atmosphere holds the atmosphere close, just like it holds you close to the Earth. (ground)
That's gravity. Near the surface air has a density of about 1.2Kg/m^3. Air isn't that lightweight as you might think. We usually just don't lift it, but push it away, which is much easier.