The Earth's atmosphere exerts a pressure on the surface. ... Areas of high and low pressure are caused by rising and falling air. As air warms, it rises leading to low pressure at the surface. As air cools, it sinks leading to high pressure at the surface of the Earth. High and low air pressure is directly related to the convection cells that are wrapped around the Earth. Wherever you are on Earth, you are at the bottom of a huge, deep ocean of air. That ocean is the atmosphere. The air in the atmosphere presses down on you all the time. As you go up in elevation, or height, air pressure decreases. For example, if you were at the top of a high mountain, you would have less air pushing down on you than you would if you were at sea level. Air has particles that are very far apart. As the pressure increases, the particles in air are pushed closer together. As the pressure decreases, the particles move farther apart. When air pressure is lower, as at the top of a mountain, you get less air with each breath you take. At the top of Mount Everest, Earth’s highest mountain, air pressure is one-third of what it is at sea level. With air pressure so low, many people have trouble breathing and thinking. That is one reason that many mountaineers breathe oxygen. Differences in air pressure help explain why your ears might pop as you drive up and down steep hills. The air pressure inside your ears might be lower than the air pressure outside your ears. You feel your ears pop as the pressure inside your ears drops or rises, becoming equal to the pressure outside your ears. This is what can happen to your ears when under too much pressure. This example works with people who dive deep in the ocean under lots of pressure. It's kind of complicated, and kind of interesting. Generally chewing gum, swallowing or yawning will help relieve the pressure on your Tympanic Membrane. If you can remember this and why your ears are popping, your journey might be that little bit more fun.
5 Comments
adam
2/20/2018 03:18:40 pm
this was great! I loved the car getting stuck.
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Jonah
2/20/2018 06:03:21 pm
Notice how most of the pictures that were switching were in the snow. there is very high pressure there
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Sadie
2/20/2018 08:30:26 pm
Good job on the blog Mrs. Taylor!!! The blog is wonderful today!!!
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gandalf
2/20/2018 09:19:18 pm
the four comment yea!!!! i agree with Jonah! who thought the egg trick with air pressure was amazing just like this blog! i just finished reading Alma chapter 52. I think that Alma is so long. good night everyone. i'm excited for tomorrow
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Errol
2/21/2018 07:37:23 am
Wow cant believe that there is not a lot of air pressure up there.....I also really hate it when my ears need to pop, but they don't....... :(
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Mrs. TaylorI love science! Everything about the world is interesting and never boring. I love to study plants, animals, insects, and people. My favorite subjects are my students who are the most unique organisms on the planet! Categories |