1 / 13

Water and Weather

Water and Weather. Chapter Five: Earth’s Atmosphere. 5.1 The Atmosphere 5.2 Layers of the Atmosphere 5.3 Earth is Just Right. Investigation 5A. The Atmosphere. Can you measure atmospheric pressure?. 5.1 The Atmosphere. Earth’s atmosphere is a layer of gases surrounding the planet.

minda
Download Presentation

Water and Weather

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Water and Weather

  2. Chapter Five: Earth’s Atmosphere • 5.1 The Atmosphere • 5.2 Layers of the Atmosphere • 5.3 Earth is Just Right

  3. Investigation 5A The Atmosphere • Can you measure atmospheric pressure?

  4. 5.1 The Atmosphere • Earth’s atmosphereis a layer of gases surrounding the planet. • The atmosphere protects and supports life.

  5. Earth’s atmosphere is made of a mixture of gases called air. Nitrogen gas makes up about 78% of Earth’s atmosphere. The second most abundant gas is oxygen, which makes up 21% of Earth’s atmosphere. 5.1 What's in Earth's atmosphere?

  6. 5.1 Nitrogen Cycle • Nitrogen is important to protein which is found in the body tissues of all living things. • Nitrogen is cycled through the soil and into plants and finally when living things die and decay.

  7. 5.1 The story of Earth’s atmosphere • Earth’s unique atmosphere exists because our planet has the right balance between mass and distance from the Sun.

  8. 5.1 Pressure in the atmosphere • The gas molecules closest to Earth’s surface are packed together very closely. • This means pressure is lower the higher up you go into the atmosphere.

  9. 5.1 Pressure changes with altitude

  10. 5.1 Pressure in the atmosphere • At sea level, the weight of the column of air above a person is about 9,800 newtons (2,200 pounds)! • This is equal to the weight of a small car. • Why aren’t we crushed by this pressure?

  11. A barometeris an instrument that measures atmospheric pressure. Long ago, mercury barometers were used. 5.1 Measuring Pressure

  12. Since mercury is a poisonous liquid, aneroid barometers are used today. 5.1 Measuring Pressure

More Related