The surface pressures at the bases of warm and cold columns of air are equal. Air pressure in the ...

Answer to #1

B

Answer to #2

A

Answer to #3

A

Answer to #4

A true blizzard is a weather condition characterized by low temperatures and strong winds bearing large amounts of fine, dry, powdery particles of snow that reduces visibility to less than one-quarter mile (and sometimes as little as a few feet) for at least three hours. This is different than a ground blizzard, which produced by a combination of drifting and blowing snow after falling snow has ended.

Answer to #5

Although many believe the expression it's too cold to snow is true, it is actually never too cold to snow. No matter how cold the air becomes, it always contains some water vapor that could produce snow. We usually associate extremely cold air with no snow because the coldest winter weather occurs on clear, calm nights - conditions that normally prevail with strong high pressure areas that have few, if any, clouds.

Answer to #6

As cumulus clouds grow, they shade the ground from the sun, which cuts off surface heating and upward convection. Without the continual supply of rising air, the cloud begins to erode as its droplets evaporate. As the cloud dissipates, surface heating begins again and regenerates another thermal, which becomes a new cumulus.

Answer to #7


We could expect to find status, cirrostratus, altostratus, or nimbostratus clouds to form in a stable atmosphere. Since air in a stable atmosphere strongly resists upward vertical motion, these clouds will tend to spread out horizontally if forced to rise. If clouds form in this rising air, they will also spread horizontally in relatively thin layers and usually have flat tops and bases.

Answer to #8

An adiabatic process is when a parcel of air expands and cools, or compresses and warms, with no interchange of heat with its outside surroundings. If the air in the parcel is unsaturated (the relative humidity is less than 100), the rate of adiabatic cooling or warming remains constant. This rate of cooling or warming only applies to unsaturated air, so it is called the dry adiabatic rate. As the rising air cools, its relative humidity increases as the air temperature approaches the dew-point temperature. If the rising air cools to its dew-point temperature, the relative humidity becomes 100. Further lifting results in condensation, a cloud forms, and latent heat is released in the rising air. The air no longer cools at the dry adiabatic rate but a lesser rate called the moist adiabatic rate. The rate at which rising or sinking saturated air changes temperature - the moist adiabatic rate - is less than the dry adiabatic rate. Furthermore, unlike the dry adiabatic rate, the moist adiabatic rate is not constant, but varies greatly with temperature.

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