Evolution of Life on Earth

What caused the formation of stars in the Milky Way galaxy?

• Plate tectonics

• Cosmic rays from the sun

• Supernova explosions

• Collision with a nearby dwarf galaxy

What process led to the formation of planetesimals in the solar system?

• Supernova explosions

• Cosmic ray bombardment

• Material circulation

• Plate tectonics

What event led to the formation of the moon?

• Supernova explosion

• Collision with a smaller planet

• Plate tectonics

• Cosmic ray bombardment

What caused the Earth's ocean to become enveloped by an ocean atmosphere system?

• Supernova explosion

• Weathering and erosion

• Plate tectonics

• Cosmic ray bombardment

Tags

NGSS.HS-ESS2-2

What process neutralized the ultra acidic ocean on early Earth?

• Weathered sediments

• Supernova explosions

• Cosmic ray bombardment

• Plate tectonics

Tags

NGSS.HS-ESS2-5

What caused the Earth's surface to be shielded from cosmic rays?

• Plate tectonics

• Cosmic ray bombardment

• Geomagnetic field

• Supernova explosion

What was the source of energy for the first prokaryotic life on Earth?

• Cosmic ray bombardment

• Plate tectonics

• Sunlight

• Nuclear geysers

What caused the Earth to undergo a global glaciation event known as the snowball earth?

• Plate tectonics

• Extreme heat periods

• Cosmic ray bombardment

• Supernova explosion

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

What led to the appearance of cyanobacteria on the Earth's surface?

• Cosmic ray bombardment

• Plate tectonics

• Formation of Rodinia supercontinent

• Increased oxygen levels

Tags

NGSS.HS-LS2-5

What caused the increase in atmospheric oxygen levels during the Ediacaran period?

• Supernova explosion

• Cosmic ray bombardment

• Increased land area

• Extreme heat periods

Tags

NGSS.HS-LS2-5