Early Earth

Earth started out as a...

• Molten rock planet

• Planet with water

• Protoplanet

• Moon

How did water arrive on early Earth?

• Meteors

• Clouds

• Dust

• Melting ice

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS2-1

Scientists know that moon rocks have heavier chlorine than is typically found on Earth. What does this evidence support?

• The Earth is flat.

• The moon was created by a protoplanet impacting the Earth.

• Oceans formed on the surface of the Earth 3 billion years ago.

• The Earth is over 4 billion years old.

Tags

NGSS.MS-ESS1-4

NGSS.MS-PS1-2

What is the first form of life on Earth?

• Humans

• Plants

• Fungi

• Protocells

Which is NOT a requirement of all life?

• Water

• Nutrients

• Energy

• Food

Pictured is zircon. It has been dated to 4.4 billion years old. This is evidence for which event in Earth's history?

• The Earth was formed over 4.4 billion years ago.

• The moon was formed by a protoplanet crashing into Earth.

• Water arrives on Earth and forms the oceans.

• The early atmosphere had lots of carbon dioxide, hydrogen, and helium.

Tags

NGSS.MS-ESS1-4

The early atmosphere did NOT have which gas?

• Helium

• Carbon dioxide

• Hydrogen

• Oxygen

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Why were the tides so much taller on early Earth?

• There was more water.

• We had more oceans.

• The moon was closer.

• The moon was farther.

Tags

NGSS.MS-PS2-4

Which of the following is NOT a theory that scientists think explain the creation of multi-celled organisms?

• Mutation - A cell's DNA breaks and changes

• Symbiosis - Cells working together eventually combine into one thing

• Time - Eventually all cells become multi-cellular with enough time.

• Predation - A predator forces the cell to adapt by becoming multi-cellular.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which is a multi-celled organism?

• 
• 

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-3