Dynamic Earth ATT Review

What conclusion can be drawn from the Theory of Plate Tectonics, The Theory of Continental Drift, and seafloor spreading?

• the Earth is cooling

• the Earth's geography changes

• the Earth is expanding

• the Earth is shrinking

Mountain chains from the U.S. and Europe match. What conclusion can you draw from this?

• the mountains formed after Pangaea separated

• this mountain chain was once one during Pangaea

• the mountain chain is still forming due to convergence

• none of the above

What is Pangaea?

• an ancient reptile Wegener used as evidence of Continental Drift

• and ancient fern Wegener used as evidence of Continental Drift

• the name of an underwater mountain range

• the supercontinent theorized by Wegener

Why did most scientists reject Wegener's Theory of Continental Drift?

• they believed in land bridges

• they believed Wegener was a crazy person

• they wanted evidence of the force strong enough to move continents (how)

• they believed Wegener had too much evidence

What was the name of the theory that Alfred Wegener proposed to explain the movement of the continents?

• Pangea

• seafloor spreading

• continental drift

• plate tectonics

What happens to the temperature and density in the Earth's layers as the depth increases?

• they both decrease

• they both increase

• they stay the same

• temperature decreases and density increases

What is the most abundant element found in Earth's crust?

• Magnesium

• Potassium

• Oxygen

• Silicon

The asthenosphere is part of which layer of Earth?

• crust

• mantle

• outer core

• inner core

We journeyed to the center of the Earth, and when we got there we discovered that the core has two parts. One part is liquid and is called the __________________. The other part is dense and solid and is called the __________________.

• outer core, inner core

• inner core, outer core

• mesosphere, asthenosphere

• asthenosphere, mesosphere

The lithosphere is composed of

• solid rock and rigid plates

• molten lava

• gases and water

• metallic elements