Sentences with phrase «denser air heats»

The drag acts to slow a satellite in its orbital path, and then simple orbital mechanics means the satellite descends into the atmosphere where the denser air heats it to the point it burns up.»

Not exact matches

It has to be dense enough to maintain structural integrity and hold in the heat but open a crack at the bottom to allow a flow of air to keep the fire going.

Our initial belief was that as the weather heats up, more MLB totals would go OVER due to pitchers becoming more easily fatigued and the air being less - dense — therefore allowing the ball to travel further and produce more runs.

While memory foam is often dense and has tightly packed cells of air that are... MORE closed off to one another, the porous memory foam used in the Ultimate Gel Memory Foam mattress is of an open cell configuration — meaning that air can more freely circulate and heat is not trapped as easily.

Denser materials, such as liquids or solids, carry energy better, so heat is transferred to the ice more quickly through liquid than it is through air, which warms up the ice and allows it to melt faster.

A pilot study by USDA scientists in Maryland added straw to a beef cattle manure pile, heating up the dense material while allowing spaces for air to penetrate.

This creates a dense net of fibers that water can't penetrate — and it also traps air bubbles that prevent heat transfer, keeping water from freezing on the feather's surface.

It is a moonless night, dark and rare, and the heat is oppressive, the kind of heat where a deep breath leaves you unsatisfied, suspicious that there was nothing life - giving at all in what you've inhaled, and you are left air - hungry, wet at the pits, forehead greasy with sweat, wishing for the night to be over, for your daughters to exhaust their energy, to cool their dense, hot centers enough to sleep for one more night in this summer that seems to stretch into your future like a planetary ring full of debris, circling forever around something it can't escape.

Hence the denser (more molecules) a substance is, the more energy (heat) it needs, which means it absorbs heat faster then a less denser substance like air for example.

As things heat up, I would therefore expect that hotter air will create less dense air and that said, air expansion would push the jet streams north and south as the tropics get more sunlight and the heat is trapped in the climate system, and absorbed slowly by the oceans.

Away from the dense network of heat absorbing (daytime) then heat radiating (nighttime) structures which is the Urban Heat Island and above the air with high water vapor content trapped by the valley along the river, not to mention the pall of coal dust over the city, morning low temps were much more like what the natural countryside would experieheat absorbing (daytime) then heat radiating (nighttime) structures which is the Urban Heat Island and above the air with high water vapor content trapped by the valley along the river, not to mention the pall of coal dust over the city, morning low temps were much more like what the natural countryside would experieheat radiating (nighttime) structures which is the Urban Heat Island and above the air with high water vapor content trapped by the valley along the river, not to mention the pall of coal dust over the city, morning low temps were much more like what the natural countryside would experieHeat Island and above the air with high water vapor content trapped by the valley along the river, not to mention the pall of coal dust over the city, morning low temps were much more like what the natural countryside would experience.

As rising air temperatures heat up the ocean's surface, this water becomes less dense and separates from the cold dense layer below, which is full of nutrients.

According to the me, the temperature will go down as heated atmospheric molecules convect upward and denser, cooler air molecules convect downward.

There would therefore be heat moved from the equator (where the hot air rises) towards the poles (where it cools and becomes less dense)-- errr, depending on the shape of the planet.

Factor in the fact that soils amd water are at least ~ 1000 times more dense than air and the idea that gases can heat warmer surfaces like soils and especially water whilst most of the atmosphere is actually much colder just seems - well — ludicrous.

Water vapour, as Stephen Wilde pointed out above, is anyway lighter than air, but heated will expand more in volume becoming even less dense and rise faster, as will air itself, nitrogen and oxygen.

A volume of air heated will become less dense expanding in volume and rise because lighter than the air around it which is colder.

In fact the sensible heat or a portion of it gets radiated to space so the heated air parcel never becomes as light as it was when it contained water vapour so it becomes denser and heavier and must fall.

The air without water in vapour form must therefore become more dense and must still fall unless the extra sensible heat warms it to such an extent that it becomes as light as the air containing water vapour previously was.

All that is needed is to add heat carried upwards past the denser atmosphere (and most CO2) by convection and the latent heat from water changing state (the majority of heat transport to the tropopause), the albedo effects of clouds, the inability of long wave «downwelling» (the blue balls) to warm water that makes up 2 / 3rds of the Earth's surface, and that due to huge differences in enthalpy dry air takes far less energy to warm than humid air so temperature is not a measure of atmospheric heat content.

, when volumes of air are heated they expand and now lighter than air rise taking away heat from the surface, and colder volumes of air, of the fluid gas air around them, being heavier because colder so more condensed will sink to the surface flowing beneath the volumes of less dense air.

When air heats up, its molecules move farther apart, making it less dense.

... similarly dense clouds, if very high, though they equally intercept the communication of the earth with the sky, yet being, from their elevated situation, colder than the earth, will radiate to it less heat than they receive from it, and may, consequently, admit of bodies on its surface becoming several degrees colder than the air.

These warm surfaces contribute to the build up of heat in dense urban areas and that leads to a surplus of problems, including increasing summertime peak energy demand, air conditioning costs, air pollution, greenhouse gas emissions, heat - related illness and mortality.