Earth's Layers
Earth's Layers II
Continental Drift
Plate Tectonics
Plate Tectonics II
100

What are the 2 main metals that make up the Earth's core?

Iron and nickel

100

Which layer is a solid ball of mostly iron that does not melt due to the high pressure of the layers on top of it?

inner core 

100

Who is the scientist that came up with the concept of continental drift?

Alfred Wegener

100

The tectonic plates are located in the ____________.

lithosphere

100

What is the cause of the creation of a mid-ocean ridge?

A. plates colliding in the lithosphere

B. plates sliding past each other in the lithosphere

C. plates moving away from each other in the lithosphere

200

Which of these is more dense:

Oceanic crust or continental crust

Oceanic crust

200

Which layer of Earth is completely liquid?

Outer core 

200

What is an explanation of observations of events that is based on knowledge from many observations and investigations?

Scientific theory

200

What is the most likely feature to form from the movement of this type of plate boundary?

A. subduction of an oceanic plate

B. mountain building

C. volcano

D. rift valley

D. rift valley

200

When an oceanic plate and a continental plate collide in the lithosphere, what happens?

subduction zone, subduct, oceanic plate subducts underneath the continental plate

300

The lithosphere is located in which 2 layers?

Crust and upper part of upper mantle

300

Which layer of Earth generates Earth's magnetic field?

Outer core

300

What year did Alfred Wegener come up with continental drift?

1912

300

Name the boundary and draw the arrows indicating the movement for the type of boundary where only faults and shallow earthquakes frequently occur

This is a transform boundary

300

True or False: 80% of earthquakes occur at convergent boundaries

True

400

The part of the mantle called the ___________ which is made up of a soft rock that bends like plastic.

asthenosphere 


400

What is the composition of the crust, mantle, and core?

Crust - basalt and granite

Mantle - magnesium (and oxygen and silicon)

Core- iron and nickel

400

What are three pieces of evidence Wegener used to try to support his hypothesis of continental drift?

Fossil evidence

Geological evidence

Pangaea

Also acceptable: ancient glacier locations

400

Heat from the Earth's core is transferred to the crust by ____________ in the ________.

convection in the mantle

400

Mid-ocean ridges occur at divergent boundaries. Molten rock erupts from the mid-ocean ridge and cools, creating new crust. What is this called?

seafloor spreading
500

Fill in the blanks:

The rigid _________ floats or moves on the slowly flowing ___________ which creates the movement of tectonic plates.

Blank 1: lithosphere

Blank 2: asthenosphere

500

A model commonly used as a model of Earth is called a density column. Liquids with different densities are layered on top of each other.

What aspect of Earth's layers is this trying to represent?

the relative position of Earth's layers


500

Continental drift did not accurately explain what important part about the movement of continents?

how and why they move

500

The Pacific Ring of Fire is a path along the Pacific ocean characterized by a lot of volcanoes and Earthquakes. Why do you think this is?

There are a lot of tectonic plate boundaries

500

What comes out of the Earth when plates diverge? 

magma

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