C13 Evolution of Earth's Atmosphere

What is the most common gas in The Earth's atmosphere NOW.

• hydrogen

• oxygen

• nitrogen

• Lynx Africa

Earth's current atmosphere is

• 78% nitrogen, 21% oxygen, 0.9% argon and 0.037% carbon dioxide
• 78% oxygen, 21%nitrogen, 0.9% argon, 0.037% carbon dioxide
• 78% nitrogen, 21% argon, 1% oxygen
• 78% oxygen, 21% nitrogen, 1% carbon dioxide

A measure of the amount of water vapor in the air is called what?

• Rigidity
• Moisture
• Humidity
• Fog

Water vapor is one of the two main gases found in

Earth's atmosphere today

• True

• False

This gas was in high concentrations in the early atmosphere, and later condensed to form the Earth's oceans.

• oxygen

• carbon dioxide

• sulfur oxides

• water vapor

This gas was in high concentrations in the developing atmospheres and later dissolved into rainwater, added to the oceans, then settled to the bottom of the ocean. 

• oxygen
• carbon dioxide
• argon
• water vapor

According to the model, how did CO₂ get into the atmosphere?

• evaporation
• condensation
• volcanoes
• sediments

What was the main ingredients that caused heat energy to be trapped, creating a greenhouse effect, in the ealry atmosphere?

• water and carbon dioxide

• oxygen

• carbon dioxide and oxygen

• nitrogen and carbon dioxide

What produced oxygen within the early stages of our atmosphere?

• Plants
• Volcanos
• Galactic Debris
• Bacteria

What happened to the carbon dioxide that was dissolved in the early oceans?

• It evaporated
• It turned into sediment
• It was changed into oxygen
• I can't think of another good wrong answer