Sentences with phrase «cold air density»
Hot vs cold air density Heating and cooling of air and weather The jet stream Tornadoes and hurricanes I like keeping the questions fairly simple so my students can focus more on the video and not trying to hurry on the sheet.
https://www.tes.com/ Not exact matches
Whilst technically a car has more power in colder air because the relative density of colder air is greater and therefore contains more oxygen than warm air, it should not cause the behavior you describe.
The declining density gradient with height (caused by gravity) permits lighter, warmer air to rise further away from the surface than can colder, heavier air at the same upward pressure gradient force.
The antarctic air colder and denser room temperature, but all this cold air made in pit should around twice the density as the fairly cold antarctic air.
My favorite possibility is that upwelling cold water west of South America lowers the ocean and air temperatures, and consequently raises the density of the atmosphere there.
The upshot of the differences in air density that manifest between 400 hPa and 50 hPa is fast displacement of low density air that travels to the top of the atmosphere in a cone that surrounds the very cold dense descending air from the mesosphere.
I've already argued that taking any gas and without doing any work causing it to separate into hotter and colder gas is a horrible, egregious violation of the second law, yet the entire gas column is by construction hydrodynamically stable, with a density strictly decreasing with height and without the slightest thing to cause bulk convection or other movements of air where «work» can be done.
The cold air at the top gains more entropy than the warmer air at the bottom loses, quite independent of the density of the air, when heat is transferred by any irreversible means you like from the bottom to the top.
If i measure IR temp from clouds above I find that its much colder (density of the air) than on the ground, so this is not where the IR is re-emitted to ground.