Cold air does take up space. All matter does.
Cold air just takes up less space than warm air.
Cold air takes up less space than warm air
Yes, cold air contracts and takes up less space, causing the balloon to deflate.
Air takes up space because it consists of molecules that have mass and volume. When air molecules are compressed or confined, they exert pressure on their surroundings, demonstrating that they occupy a physical space. This property is known as the compressibility of gases.
air conditorner doesnt blow cold air has freeon compressor doesnt kick on
you would need to add freon
cold air
Because that hot air is less dense that cold air. This means that hot air simply takes up more space that cold air, so when this happens, because of buoyancy it creates lift. And depending on the volume of the balloon and weight of the rig it might lift off.
clouds
The density of air varies with temperature, so for a given pressure and volume cold air will weigh more. With more weight comes more oxygen(and more of everything else too), all other things being equal.
Cold air has more molecules occupying space than warm air, therefore it has high pressure.
Yes the air inside a ball is matter. Matter is anything that takes up space and has mass (solid liqud or gas), the air in the ball takes up space.
Yes, cold air can kill roaches, but it takes a prolonged period of being exposed to cold air to also kill the egg cases.