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Homework - Air Pressure and Air fronts

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Last updated 11 months ago
15 questions
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Air pressure is the weight of the molecules in a large mass of air. When molecules of air are cool, they are closer together than when they are warm. Cool air masses have high pressure, or more weight. Warm air masses have low pressure, or less weight.

Warm air also puts less pressure on the Earth than cool air. As a result, air in a low-pressure system rises. Cool air puts greater pressure on the Earth than warmer air. As a result, air in a higher pressure system sinks.

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Question 2
2.
Cold air __________ and sinks. When cool air condenses like this, more weight or __________ is put on the Earth.


Warm air __________ and rises. When hot air expands it puts __________ on the Earth.
In the Northern Hemisphere, Earth's rotation causes winds to blow counterclockwise around a low-pressure system and converge. Around a high pressure system, the winds blow clockwise and diverge.

In a High Pressure System, cool, dense air sinks and clouds cannot form. High pressure systems often bring clear skies and fair weather. In a lower pressure system, warm less dense air rises. This rising air cools as water vapor in the air condenses. Therefore, a low-pressure system is often associated with cloudy weather and precipitation.
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Question 4
4.
In the Northern Hemisphere, Earth's rotation causes winds to blow __________ and converge.


Around a high pressure system, the winds blow __________ and diverge.
Diverge means to __________.
Question 5
5.

Use the text to above to help you complete the table

Low Pressure System
High Pressure System
cool, dense air sinks and clouds cannot form
rising air cools as water vapor in the air condenses
cloudy weather and precipitation
clear skies and fair weather
Question 6
6.

A) Create a diagram of the cold fronts before, while, and after passing.

B) Create a diagram of the warm fronts before, while, and after passing.

Trim End | 02:22
Question 7 | 00:38
Question 8 | 01:09
Question 9 | 01:43
Question 10 | 02:20
00:00/00:00
Question 7
00:38
Question 8
01:09
Question 9
01:43
Question 10
02:20
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Question 13
13.

What type of front passed through St. Louis?

Explain the type of weather they experienced as the front passed.

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Question 14
14.

What type of front passed through San Francisco? Explain the type of weather they experienced before and after the passing of the front.

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Question 11
11.

Which of these cities is experiencing clear dry weather conditions?

Question 12
12.

Which of these cities are probably experiencing stormy conditions or rainy weather conditions?

Question 15
15.

A) Look it up! What does a negative number on the Celsius scale represent?


B) The weather station in Miami reported their temperature reading as - 3 degrees C. Argue weather you think this temperature was reported in error.