Evolution of the Atmosphere

What happened to the Earth's first atmosphere?

• Absorbed into the oceans

• Still here

• Blown off by the solar winds

Tags

NGSS.HS-ESS1-6

What happened to the Earth's second atmosphere?

• Absorbed into the oceans

• Still here

• Blown off by the solar winds

What happened to the Earth's third atmosphere?

• Absorbed into the oceans

• Still here

• Blown off by the solar winds

How was the second atmosphere formed?

• Outgassing

• Cyanobacteria/blue green algae

• Formed with the planet

How was the third/current atmosphere formed?

• Outgassing

• Cyanobacteria/blue green algae

• Formed with the planet

Tags

NGSS.MS-ESS2-1

Outgassing

• 
• 
• 

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Solar winds

• 
• 
• 

Cyanobacteria

• 
• 
• 

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Earth's atmosphere is 78% ______

• carbon dioxide

• oxygen

• nitrogen

Earth's atmosphere is 21% ______

• carbon dioxide

• oxygen

• nitrogen