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Identify the order of the layers of the atmosphere starting with the layer closest to the ground. troposphere, stratosphere,mesosphere, thermosphere (ionosphere, exosphere)
What layer of the atmosphere does weather occur? troposphere
The stratosphere protects us from the sun's ultraviolet rays because of the ____________ ___________ ozone layer
Why is the ionosphere important? It contains charged particles that reflect radiowaves.
21% of our atmosphere is made up of what kind of gas? Oxygen
78% of our atmosphere is made up of what kind of gas? Nitrogen
Define air pressure. The weight of air being pulled down on an area of Earth's atmosphere.
Define climate. The average, year after year, conditions of the atmosphere including temperature, precipitation, winds, and clouds in an area.
Why does air have pressure? Air is matter. It takes up space and has mass.
When the altitude increases, what happens to the the air pressure? Air pressure decreases because there is less air (atmosphere) above you.
When the altitude increases, what happens to the density of the air? The density of the air decreases (air molecules and particles become more spread out)
What is a barometer used for? To measure air pressure
Define weather. Weather is the condition of the air surrounding Earth (atmosphere)
What are the two factors that affect air pressure? temperature, altitude (amount of air above you)
Which layer of the atmosphere contains sattelites orbiting the earth? exosphere
Why is the mesosphere important? protects us from meteors (meteoroids burn up in this layer)
Identify two ways that the atmosphere makes life on Earth possible. 1. provides us with Oxygen and other gases necessary for survival 2.Provides us with warmth, trapping in heat from the sun 3. provides us with liquid water, carries on the water cycle 4. protects from meteors 5. protects from UV rays
Low air pressure usually indicates what kind of weather? cloudy, rainy, stormy
High air pressure usually indicates what kind of weather? sunny, clear skies
Why did the two highest jumps from the stratosphere take off from Roswell, New Mexico? This area is a desert that is very dry and usually pretty warm. There are very few trees and no bodies of water. Since there are no bodies of water, little evaporation occurs creating very low humidity and very little chance of clouds (precipitation).
Explain how convection currents work. When a fluid is heated, the fluid becomes warm and less dense causing it to rise. Then, the fluid begins to cool as it gets further away from the heat source. As it cools it becomes denser and sinks. This is a cycle that continues.
How does air move? high to low pressure
Study the weather map you created on the "What weather will you see? map in your Science Journal. Be able to interpret a weather map with isobars.
Define isobar. A line on a weather map that connects areas with the same air pressure (usually spaced 4 millibars apart)
Created by: Mrs.Koch