Earth Science Unit Review 2020

How old do Paleontologists believe the Earth is?

• 2015 years old

• 3.6 billion years old

• 4.6 billion years old

• 4.6 million years old

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What was the name given to all the continents when they were joined as one super continent?

• Supreme Continent

• Eurasia

• Plate tectonics

• Pangea

The Geologic Time Scale is a record of what?

• old geologists

• sweet geology music

• the known history of rocks and fossils

• a list of every living thing ever

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This is the driving force behind the movement of tectonic plates.

• Mantle convection currents

• Oceanic convection currents

• Atmospheric convection currents

• Solar convection currents

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Which rock layer is the youngest?

• A

• B

• C

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What type of plate boundary is this?

• Plate

• Divergent

• Convergent

• Transform

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What type of boundary is shown at A?

• transform

• convergent

• divergent

• subduction

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Below is a picture of sea-floor spreading. How are the ocean crusts moving?

• Converging

• Diverging

• Sliding

• No movement

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What can scientists learn from studying the relationships between fossils?

• how old all rock layers are

• how life changed over time

• how many relatives fossils had

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In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

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