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i have a project to do and i cant answer this question. can you "guys" help me?

2007-12-15 13:03:14 · 3 answers · asked by Shanae :) 2 in Science & Mathematics Weather

3 answers

The atmosphere exerts a downward force which is called air pressure or atmospheric pressure.Because air molecules are drawn to earth by gravity,pressure is greatest at the earth's surface and decreases with altitude.Air pressures are reported in millibars(or hectopascals) for meteorological purposes.Fluctuations in air pressure,detected by barometers,reflect imminent changes in the weather conditions.A fall in pressure indicates unsettled weather(usually with cloud formation) while a rise in the pressure value suggests fair weather conditions.
So, a fall in atmospheric pressure increases the chances of cloud formation.

2007-12-15 14:43:31 · answer #1 · answered by Arasan 7 · 0 0

High pressure acts as cap to not allow humid air to rise and impede cloud formation. This can be more prevalent in the summer than the winter. But you'll also notice that low pressure areas such as a synoptic low or a hurricane will be covered in clouds and areas of high pressure such as after the passing of a cold front or the bermuda high during the summer will be have little to no cloud formation. There are several other factors than just pressure at work with cloud formation, but that answer should satisfy your question.

2007-12-15 14:01:11 · answer #2 · answered by Ryan R 1 · 0 0

The more compressed the pressure (low pressure), the more heat is compressed (making humidity higher), thus causing evaporation and condensation

The less compresed the pressure (high pressure), the more spread out the heat is, making it hard for water to evaporate

You should have learned ALL of this in 6th grade.

2007-12-15 13:10:45 · answer #3 · answered by Account Formally Known as Hyp64 4 · 0 0

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