Evolution of the Atmosphere

The most abundant gas in Earth's atmosphere today is what?

• Oxygen

• Nitrogen

• Troposphere

• Helium

What gas makes up 21% of Earth's Atmosphere today?

• Nitrogen

• Oxygen

• Ozone

• None of the Above

The _____ protects us from the sun's harmful UV rays.

• Ozone

• Troposphere

• Clouds

• Exosphere

What two elements made up Earth's first atmosphere?

• Nitrogen and Oxygen

• Carbon Dioxide and Oxygen

• Hydrogen and Helium

• Water Vapor and Oxygen

Tags

NGSS.MS-PS1-1

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-ESS2-4

Scientists hypothesize that _________ put oxygen in to the atmosphere due to the evidence of banded iron formations ("red rock" bands).

• photosynthesis by microbes

• outgasing by volcanoes

• meteor impacts

• respiration by bacteria

Tags

NGSS.MS-LS1-6

What happened to all of the CO2?

• It dissolved into the oceans

• It formed sedimentary rocks

• Plants used it for photosynthesis

• All of the above

Tags

NGSS.MS-LS1-6

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

From 4.6-4 bya the Earth was hot, the surface was covered in molten lava, and there was a lot of volcanic activity. This was the...

• Hadean Eon

• Archean Eon

• Proterozoic Eon

• Phanerozoic Eon

Tags

NGSS.MS-ESS1-4

What gases were added to Earth's atmosphere due to volcanic activity?

• oxygen and carbon dioxide

• argon and methane

• hydrogen and helium

• carbon dioxide and water vapor

Gases in the Earth's atmosphere like CO2 trap heat from the sun and make the Earth warmer. This is known as...

• the warming effect

• milankovitch cycles

• the greenhouse effect

• global warming

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS2-4