What is air made up of?

What is air made up of?

Professor Gizmo (Amazing Science Presentations) gives expert video advice on: Why do we need to wear a space suit in space?; Why do things float around in space?; Why do stars twinkle? and more...

You have mostly Nitrogen, some Oxygen, some Carbon Dioxide, and a whole bunch of other gases that are mixed in the air. It's very thick, and without air it's like driving down a highway and sticking your hand out the window; it's going to get pushed back. In air, you have lots of particles at the surface of the earth. We're in air, we're in atmosphere, and it's very thick. It's almost like we're living at the bottom of an ocean of air. It's pushing down on us and creates pressure. You can't see air, but you can see the effects of air. If you move through the air very fast, you can feel it. Wind is blowing, you can feel it. Wind is blowing on a tree, you can see it moving. But you can't see the air itself. All you can do is see the effects of the air and the wind, or if you're moving through the air very fast.