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Describe the difference between weather and climate
weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area
What are the two gases that make up the atmosphere? What percent does each make up?
nitrogen- 78% oxygen- 21%
Explain how oxygen cycles from the atmosphere to plants and animals and back.
animals and plants breathe in oxygen and breathe out carbon dioxide which transport to plants, plants create oxygen with photosynthesis
Why do we have atmospheric pressure?
Atmospheric pressure is caused by gravitational attraction of the planet on the atmospheric gases above the surface
What is the name of the instrument that measures atmospheric pressure?
List the layers of the atmosphere from the ground up and describe what makes each layer up.
troposphere, stratosphere, mesosphere, thermosphere, exosphere
Why does the sky appear to be blue?
Sunlight reaches earth's atmosphere and is scattered in all directions. The scattered violet and blue light dominates the sky, making it appear blue.
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