Warm-up: Atmosphere Evolution, Composition, and Structure

The current atmosphere is composed of mainly?

• Oxygen
• Argon
• Carbon dioxide
• Nitrogen

Oxygen is the most common gas in the current atmosphere.

• True
• False
• Both True and False
• Neither True nor False

What two elements made up the earliest atmosphere? (Stage 1)

• Nitrogen and Oxygen

• Carbon Dioxide and Oxygen

• Hydrogen and Helium

• Water Vapor and Oxygen

What produced oxygen within the early stages of our modern atmosphere?

• Plants

• Volcanos

• Galactic Debris

• cyanobacteria/blue-green algae

What happened to our initial atmosphere because it was light gases of hydrogen and helium?

• It drifted off into space

• The gases combined to form oxygen

• We've always had the same atmosphere

• None of the above

The second atmosphere, volcanoes appeared and released ________ and _____________.

• water and oxygen
• carbon dioxide and nitrogen
• nitrogen and water
• Helium and carbon dioxide

How do we know about the early existence of the Earth atmosphere?

• ice cores in Greenland and antarctica, plus Rock formation

• the dinosaurs wrote it in caves

• we really have no clue

In order for the oceans to form on Earth, what had to happen?

• Earth had to heat up and water had to evaporate

• Earth had to remain constant temperature

• More Volcanoes had to erupt

• Earth's surface had to cool down and allowed condensation to occur

Tags

NGSS.MS-ESS2-2

Which layer of the atmosphere has weather, is the densest, and has the most pressure?

• troposphere

• stratosphere

• mesosphere

• thermosphere

The atmosphere is divided into five layers based upon the property of ____________.

• density

• color

• age

• temperature