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Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation. SPI 0807.9.5 Atmospheric Composition. Notes. Science. Tennessee SPI Objective:

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  1. Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation. SPI 0807.9.5 Atmospheric Composition Notes Science Tennessee SPI Objective: Describe the chemical makeup of the atmosphere. Check for Understanding Explain how the chemical makeup of the atmosphere illustrates a mixture of gases. Essential Question(s) What is the chemical composition of our atmosphere, and how doe this illustrate a mixture of gases?

  2. SPI 0807.9.5 Atmospheric Composition Notes Science What is an Atmosphere? • An atmosphere is the mass of gases that surrounds a planet • and is held in place by the gravity of the planet. • Planetary atmospheres are common in our solar system • (Even the Moon has a thin atmosphere) Saturn Mars Jupiter Earth The Moon

  3. SPI 0807.9.5 Atmospheric Composition Notes Science Earth's Atmosphere Earth’s atmosphere is a mixture of various gases Earth's Current Atmosphere …(approx) 78% nitrogen …(approx) 21% oxygen …(approx) 1% other gases (argon, water vapor, carbon dioxide, ozone, etc) 7 8 N 18 O Ar Nitrogen Oxygen 14.0 Argon 16.0 39.9 Remember! Our atmosphere is a MIXTURE & not a compound

  4. SPI 0807.9.5 Atmospheric Composition Notes Science Earth's Current Atmosphere …(approx) 78% nitrogen …(approx) 21% oxygen …(approx) 1% other gases (argon, water vapor, carbon dioxide, ozone, etc) 7 8 N 18 O Ar Nitrogen Oxygen 14.0 Argon 16.0 39.9

  5. SPI 0807.9.5 Atmospheric Composition Notes Science • Where did Earth's atmosphere come from? • from comets and planetismals • Venting from volcanoes • oxygen from plants • (View Holt Online Ch15: Sect 3 VC)

  6. SPI 0807.9.5 Atmospheric Composition Notes Science • Where did Earth's atmosphere come from? • from comets and planetismals(water from space) What are comets? Comets are giant "dirty snowballs" in space. They consist of frozen water, stellar dust, and rocky debris.p406

  7. SPI 0807.9.5 Atmospheric Composition Notes Science • Where did Earth's atmosphere come from? • Venting from volcanoes • 3 most common gases from volcanoes • (1) Water Vapor, (2) Carbon Dioxide, and (3) Sulfur Dioxide

  8. SPI 0807.9.5 Atmospheric Composition Notes Science • Where did Earth's atmosphere come from? • oxygen from plants • (plants absorb carbon dioxide & release oxygen)

  9. SPI 0807.9.5 Atmospheric Composition Notes Science Yes it has! Has Earth's atmosphere ever changed? Earth’s first atmosphere was mostly carbon dioxide, water vapor, & ammonia What changed it? Plants converted the carbon dioxide to oxygen , and this oxygen broke down the ammonia into nitrogen.

  10. SPI 0807.9.5 Atmospheric Composition Review Science 1 3 Oxygen 2 For the Earth’s atmosphere, section number two in the pie Graph above BEST represents the percentage of…? A) Carbon B) Oxygen C) Argon D) Nitrogen

  11. SPI 0807.9.5 Atmospheric Composition Review Science • In diagram 01 below, which gas is represented in the portion • labeled 1 on the pie chart? • Argon B) Nitrogen C) Hydrogen D) Oxygen Nitrogen Diagram 02 Diagram 01

  12. SPI 0807.9.5 Atmospheric Composition Science Questions Atmospheric Composition-Question Here is an example of a question you might see on a quiz or test.

  13. SPI 0807.9.5 Atmospheric Composition Science Questions Atmospheric Composition-Question Here is an example of a question you might see on a quiz or test.

  14. SPI 0807.9.5 Atmospheric Composition Science Questions Atmospheric Composition-Question Here is an example of a question you might see on a quiz or test.

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