Crust
Mantle
Outer core
Inner core
Other
2
What are the two types of the Earth's crust?
Oceanic and Continental.
2
How thick is the Mantle?
The mantle is about 2900 km thick.
2

The outer core is the only ______ Layer

Liquid

2

Why is the Inner core solid? 

The pressure is so high the atoms are pressed together to form a solid. 

2

Who proposed the idea of Continental Drift?

Alfred Wegner

4

How thick is the Earth's crust?

5-75 km thick

4

What is one word to describe the upper mantle. This word relates to the ability for a solid to move like a liquid. 

Plasticity 

4
What is the Outer core composed of?
It is composed of liquid iron and nickel.
4
What is the Inner core composed of?
It is composed of solid nickel and iron.
4

What is the last super continents name? 

Pangaea

6
The crust of the Earth is broken into many pieces called what?
Tectonic plates.
6

How does the Temperature change as you go from the top of the mantle to the bottom? 

It Increases

6

How do we know that the outer core is a liquid? 

S waves can't travel through the outer core. 

6

Why does the inner core have the most dense materials? 

The most dense material "Sinks" to the bottom. Which when looking at the Earth is the center. 

6

What are the 4 pieces of evidence that Wegner discovered? 

Fossil, Puzzle, Climate, and Geologic Evidence

8

The Crust and upper most part of the mantle make up what? 

Tectonic Plates

8
What causes the Mantle's "flows"?
Convection currents.
8
Why is the iron and nickel in a liquid state in the Outer core?
Because the inner core melts all of it by the time it reaches the outer core.
8

What happens in the inner and outer cores to make the earth magnetic field? 

The Liquid outer core connvects around the solid inner core

8

What was discovered that proved Wegner's theory? 

Seafloor Spreading.

10

What do the plates float on?

The plates float on the soft, plastic mantle which is located below the crust.

10

What are the two layers of the Mantle?

Asthenosphere (Upper Mantle) and the Lower Mantle

10
What sort of field does the outer core create?
A magnetic one.
10
Why doesn't the metal ores in the Inner core melt?
Because of the amount of pressure that there is in the inner core.
10

What was the name of the new Theory proposed after Continental Drift? 

The Theory of Plate Tectonics. 

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