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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