Marine Science: Introduction to Plate Tectonics
Go to: Plate Tectonics: http://oceanexplorer.noaa.gov/edu/learning/player/lesson01.html
1: How many earthquakes occur every year around the world?
2,000 on average every year.
2: What is the Tectonics Theory? Explain.
It states that the Earth's surface is not fixed forever. Instead it's in a constant, changing motion.
3: Where do the Tectonic forces originate?
They originate deep within the planet.
4: What are Earth’s 3 main layers?
A central core, a thick mantle, and a very thin outer crust.
5: Where is Tectonic activity concentrated?
It is concentrated within the upper 700 kilometers of the planet.
6: What is the Lithosphere? Where is it located?
It's the mantle and crust that are fused into a rigid, rocky layer which is about 100 kilometers thick. It encases the entire Earth and it's in pieces that can sometimes smack into one another
7: What is the Asthenosphere? Why is it important to plate tectonics?
It is the the area below the Lithosphere. It's liquid like and the plates float on top of it so since it flows the plates will move but slowly.
8: How fast do plates move (average?)
At the speed of fingernails growing.
9: What are the 3 types of plate boundaries?
Divergent, Convergent, Transform
10: What happens at Divergent Boundaries? Where are these mostly located?
Its when two plate boundaries move away from each other.
11: What kind of rock is Oceanic Crust made of?
Basalt
12: What happens at Convergent Boundaries? What is often formed? Explain.
Its when one plate boundary goes under another one.
13: What is Granite? Where is it found?
Its a rock and be found in convergent boundaries
14: What happens at Transform Boundaries? What is special about transform boundaries?
They slip and grind against one another so they can create earthquakes.
Go to: Plate Tectonics: http://oceanexplorer.noaa.gov/edu/learning/player/lesson01.html
1: How many earthquakes occur every year around the world?
2,000 on average every year.
2: What is the Tectonics Theory? Explain.
It states that the Earth's surface is not fixed forever. Instead it's in a constant, changing motion.
3: Where do the Tectonic forces originate?
They originate deep within the planet.
4: What are Earth’s 3 main layers?
A central core, a thick mantle, and a very thin outer crust.
5: Where is Tectonic activity concentrated?
It is concentrated within the upper 700 kilometers of the planet.
6: What is the Lithosphere? Where is it located?
It's the mantle and crust that are fused into a rigid, rocky layer which is about 100 kilometers thick. It encases the entire Earth and it's in pieces that can sometimes smack into one another
7: What is the Asthenosphere? Why is it important to plate tectonics?
It is the the area below the Lithosphere. It's liquid like and the plates float on top of it so since it flows the plates will move but slowly.
8: How fast do plates move (average?)
At the speed of fingernails growing.
9: What are the 3 types of plate boundaries?
Divergent, Convergent, Transform
10: What happens at Divergent Boundaries? Where are these mostly located?
Its when two plate boundaries move away from each other.
11: What kind of rock is Oceanic Crust made of?
Basalt
12: What happens at Convergent Boundaries? What is often formed? Explain.
Its when one plate boundary goes under another one.
13: What is Granite? Where is it found?
Its a rock and be found in convergent boundaries
14: What happens at Transform Boundaries? What is special about transform boundaries?
They slip and grind against one another so they can create earthquakes.