Atmospheric Composition No Bell Work today.

Success Criteria: TOC: 37. Atmospheric Composition Notes I can identify the chemical composition of our atmosphere. I can illustrate a mixture of gases. TOC: 37. Atmospheric Composition Notes Atmosphere song

An atmosphere is the mass of gases that surrounds a planet Brain Pop: Earth’s Atmosphere 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) Mars Saturn The Moon Jupiter Earth

Remember! Our atmosphere is a MIXTURE & not a compound 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) Nitrogen 7 N 14.0 Oxygen 8 O 16.0 Argon 18 Ar 39.9 Remember! Our atmosphere is a MIXTURE & not a compound

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

(View Holt Online Ch15: Sect 3 VC) Where did Earth's atmosphere come from? from comets and planetismals (water from space) Venting from volcanoes oxygen from plants (View Holt Online Ch15: Sect 3 VC)

What are comets? 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

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

Where did Earth's atmosphere come from? oxygen from plants (plants absorb carbon dioxide & release oxygen)

Yes it has! What changed it? 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.

Atmospheric Composition SPI 0807.9.5 Atmospheric Composition Review 1 3 2 Oxygen 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

Atmospheric Composition SPI 0807.9.5 Atmospheric Composition Review 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 01 Diagram 02

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

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

Exit Ticket The table shows the percentage of individuals in a population of insects that is resistant to certain types of insecticides. Which two populations would be most affected by a widespread use of Insecticide 2? A. 2 and 4 B. 1 and 6 C. 3 and 5 D. 4 and 6