Formation of Earth

In the earliest stages of Earth's development, our planet was made of what?

• a very dense core and thick crust

• molten rock

• plasma like our sun

• vast bodies of water

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NGSS.HS-ESS1-6

What happened on the surface of the Earth shortly after it formed?

• The molten rock cooled and formed a crust

• The water on Earth froze solid

• Mountains, volcanoes, and other land forms were created

• The atmosphere began to form

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NGSS.HS-ESS1-6

Scientists are able to determine how the Earth formed by:

• radioactive dating of meteorites.

• analyzing craters on the Earth and Moon.

• studying the size an composition of other planets.

• all of the above.

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NGSS.HS-ESS1-6

It was difficult for scientists to explain the formation of Earth because:

• it occurred too quickly

• much of the evidence on Earth has been destroyed

• early records have been lost

• the creation of the moon took the evidence with it

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NGSS.HS-ESS1-6

Scientists are able to determine how the Earth formed by (choose all that apply):

• radioactive dating of meteorites.

• analyzing craters on the Earth and Moon.

• studying the size and composition of other planets.

• ancient records written on cave walls by early humans

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NGSS.HS-ESS1-6

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-ESS1-5

NGSS.HS-ESS1-6

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

Tags

NGSS.HS-ESS1-6

What is the primary theory for the formation of Earth?

• The Big Bang Theory

• The Nebular Hypothesis

• The Plate Tectonics Theory

• The Continental Drift Theory

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NGSS.HS-ESS1-6

Which process is believed to have led to the differentiation of Earth's layers?

• Volcanic eruptions

• Gravitational settling

• Photosynthesis

• Erosion

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NGSS.HS-ESS2-1

NGSS.HS-ESS2-3

What evidence supports the age of Earth being approximately 4.5 billion years?

• Fossil records

• Ice core samples

• Radioactive dating of meteorites

• Tree ring analysis

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NGSS.HS-ESS1-6