Earth Science Review 6E2

What is the chemical makeup, thickness, and state of matter of the following layers of Earth’s interior?

• Crust / Lithosphere is 60 miles / 80 miles soil and dirt

• Outer Core 25 miles thick and liquid

• Asthenosphere / Mantle 1800 miles thick

• Inner Core is / 150 miles / Iron / solid

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Metamorphic rock is which type of rock?

• Hot Lava

• metamorphic and igneous

• Igneous and Basalt

• Sedimentary or Igneous (under extreme pressure)

The major ingredient in soil

• broken up lava

• weathered rock

• crushed shell

• shell and broken rock

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What refers to the movement of Earth's plates

• Tectonics

• Continental Drift

• Drifting Plates

• Tectonical Drifting

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In which layer of the Earth’s interior does convection currents occur?

• Outer Core

• Inner Core

• Lithosphere

• Asthenosphere

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What causes Earth's plates to move?

• currents in the Lithosphere

• convection in the mantle

• heat from Inner Core

• Earth Quakes

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How do convection currents affect the Earth’s surface?

• eruptions are responsible for releasing molten rock, or lava, from deep within the Earth

• by the movement of large crustal blocks when forces in the Earth's crust pull it apart

• The core heats up the magma and causes a convection current. When magma comes to the top of the mantle, it pushes against tectonic plates, which are huge slabs of rock which the crust rests on.

• caused by the collision of plates below the earth's surface that triggers various geologic processes that produce this

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A substance with a ph lower than 7/

• soda

• water

• ocean water

• Acid

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What does the Theory of Plate Tectonics state?

• When a volcano erupts and creates new land

• When plates break apart to create more plates.

• dense oceanic lithosphere dives beneath the other plate and sinks into the mantle

• earth's crust is divided into massive slabs known as tectonic plates.These plates move on the mantle which is a layer made of magma, which consists of semisolid rocks.The heat from earth's core causes convection currents much like in a beaker full of water.But, here the force developed by the magma is so great that it slowly moves the plates like boats on sea over millions of years.

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What makes up the Pedosphere?

• soil

• water

• rocks

• sand

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