Layers of the Earth
True or False: Earth's basic structure is divided into 6 layers.
False
The ______________ ____________ theory states that continents have moved and are still moving.
Continental Drift
True or False: There are 3 main types of plate boundaries or faults.
True
Name the type of boundary created when two tectonic plates are pushing together.
Convergent Boundary
As you move towards the center of the Earth temperate and pressure ______________.
Increases
This layer of Earth is the thinnest layer.
The crust
The crust is the outer layer of the earth and is broken into giant blocks or puzzle pieces called ___________ ________.
Tectonic Plates
When two plates push together, a ___________ boundary is formed. This type of boundary results in _______________ or _____________.
Convergent
Mountains or Trenches
Name the type of boundary created when two tectonic plates are spreading apart from each other.
Divergent Boundary
What is evidence that humans use to support evidence of Pangaea?
Matching plant and animal fossils on different continents
Matching mountain ranges/formations on different continents
This layer of Earth is made of solid iron and nickel.
The Outer Core
Earth's continents were all once a supercontinent named ________________.
Pangaea
When plates move apart, a divergent boundary is formed. This occurs on the ocean floor and is called __________ _______________.
Seafloor Spreading
Name the type of boundary created when two tectonic plates are moving past one another horizontally.
Transform or Strike-Slip Boundary
True or False: The source of Earth's magnetic field is the inner core.
False
The mantle is the thickest layer of Earth. It is so hot that rocks move in convection currents like _______________ _______.
Conveyor Belts
About how many years ago did Pangaea begin to break apart?
Some convergent boundaries occur between a continental and oceanic plate. This results in ____________ and forms volcanoes
Subduction
This type of boundary most often results in the formation of mountains.
Convergent Boundaries
What does seafloor spreading create?
New ocean floor (new crust)
The outer core is made up of ___________ __________ and ____________.
Melted Iron and Nickel
What is the name of the scientist who proposed the Continental Drift Theory?
Alfred Wegner
Finally, when two plates slide past each other horizontally, a transform or ________________ boundary is formed. These types of boundaries grind against each other causing earthquakes!
Strike-Slip
This type of boundary most often results in the magma rising up between the two plates forming volcanic mountains under the ocean.
Divergent Boundaries
Plate Tectonics