Formation of the Earth

The Earth is estimated to be approximately:

• 4.5 billion years old

• 4.5 million years old

• 45 billion years old

• 45 million years old

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NGSS.HS-ESS1-6

The elements on Earth were arranged according to their:

• Weight

• Mass

• Density

• Volume

Earth's core is made up of:

• mostly carbon

• nickel and iron

• mostly silicon

• a mix of all elements

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When the Earth was young, it was molten do to high amounts of energy and heat from:

• iron forming alloys with nickel

• radioactive elements decaying

• left over heat from the big bang

• left over heat from the supernova explosion

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NGSS.HS-ESS1-6

Earth's early atmosphere did NOT include which gas?

• N₂

• H₂O

• CO₂

• O₂

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NGSS.HS-ESS1-6

Where did the water in the oceans originate?

• Oceans were already apart of the creation of Earth

• Water from meteorites

• Atmospheric hydrogen reacting with oxygen

• Early life forms respirating

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NGSS.HS-ESS1-6

Life on Earth started as:

• amino acids from meteorites

• cyanobacteria

• a pool of genetic material

• eukaryotic cells

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NGSS.HS-ESS1-6

The oldest rocks found on Earth are approximately:

• 2.8 billion years old

• 3.3 billion years old

• 4.2 billion years old

• 4.2 million years old

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NGSS.HS-ESS1-6

Why is it hard to find very old rocks on Earth?

• Erosion, volcanic eruptions and other processes destroy rocks

• The Earth didn't become solid for billions of years

• The oldest rocks were made into the moon during a collision

• The oldest rocks were destroyed in a huge collision that killed the dinosaurs

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NGSS.HS-ESS2-1

How did the Earth get its moon?

• an impact with a protoplanet that flung debris into space

• it formed at the same time as the Earth from gases

• it was an asteroid that came close enough to begin orbiting Earth

• it was supposed to be a planet but didn't get large enough

Tags

NGSS.HS-ESS1-6