Plate Movement
A large supercontinent that Wegner said existed hundreds of millions years ago
Pangea
What are the 3 layers of the earth in order from innermost to outermost?
Core, Crust, Mantle
What are the 3 types of boundaries we talked about?
divergent, convergent, and transform
Who studies earthquakes?
seismologists
When two __________ _____________ separate, collide, or slide past one another, the earth's surface changes
tectonic plates
Where are tectonic plates located?
lithospere
What is the inner Core made up of?
hot, dense, solid metals
What two things led to the theory of plate tectonics?
Continental drift and seafloor spreading
The Richter scale goes from _____ to _____ with ______ being the strongest.
0 to 10; 10
How were the Rocky Mountains formed?
Tectonic plates collided.
Explain the difference between continental crusts and oceanic crusts?
Continental is thick and below the continents
Oceanic is thin and make up ocean floors
What is the thinnest layer of the Earth?
Crust
What type of boundary involves subduction?
Convergent
What type of motion do P-waves move in?
Spiral
Mountains can form when tectonic plates collide or when _________________________.
an oceanic crust plate is subducted below a continental crust plate.
How did Wegner support his theory of continental drift?
He used fossils and rocks. Rock layers and plant/ animal fossils were found on continents on both sides of the Atlantic Ocean
What section of the mantle includes the crust
lithosphere
The Andes Mountains are a result of this type of boundary.
convergent
Describe the focus and the epicenter of an earthquake
The focus is where an earthquake begins and the epicenter is directly above the earth's focus on the earth's surface.
What is the difference between a normal fault and a reverse fault?
In normal faults, the crust pulls apart. In reverse faults, the crust pushes together.
Name the seven continents that resulted from Wegners's theory?
North America, South America, Europe, Asia, Australia, Antarctica, and Africa
Compare the layers of the Earth to an object. Explain how the object represents the layers of the earth
Ex Peach- has 3 layers (core, pit, and flesh)
Explain the cycle of convection currents.
Hot magma rises to the top of the asthenosphere. As magma rises, it cools and begins to sink again. The magma pushes the tectonic plates along as it cycle through the mantle.
True or False: Earthquakes only occur way below the earth's interior
How did the Hawaiian islands form?
They were a result of a hot spot.