Plate Tectonics
1) How many earthquakes occur every year around the world?
About 2,000 earthquakes occur every year around the world.
2) What is the Tectonics Theory? Explain.
The Tectonics Theory is that the surface of the earth is not fixed and eternal but is in constant ever changing motion.
3) Where do the Tectonics Theory originate?
The Tectonics Theory originated deep within the plan.
4) What are earth's 3 main layers?
Earth's three main layers are the inner, outer core, mantle and the crust.
5) Where is Tectonic activity concentrated?
Tectonic Activity is concentrated in the upper 700 km of the mantle and crust.
6) What is the Lithosphere? Where is it located?
The lithosphere encases the entire Earth but is broken into pieces but into another lithosphere (100 km thick)
7) What is the Asthenosphere? Why is it important to plate tectonics?
The asthenosphere is a solid but soft layer of the upper mantle. The asthenosphere is squishy, it can deform and flow. The asthenosphere is below the lithosphere. It is important to plate tectonics
8) How fast do plates move ( average ) ?
Plates move averaging the same speed as our fingernails
9) What are the 3 types of plate boundaries?
The three types of plate boundaries are Divergent, Convergent, and Transform.
10) What happens at Divergent Boundaries? Where are these mostly located?
The plates pull apart, a narrow rift valley forms as the crust splits open, lava spews from long fishers and geysers heated water, frequent earthquakes strike along the rift. Beneath the rift magma or molten rock rises form the mantle it oozes up into the gap and hardens into solid rock forming new crust on the torn edges of the plates. Magma from the mantle solidifies into basalt, a dark dense rock that underlies the ocean floor. Thus at divergent boundaries oceanic crust made of basalt is created.
11) What kind of rock is Oceanic Crust made of ?
The Oceanic Crust is made of basalt.
12) What happens at Convergent Boundaries? What is often formed? Explain.
At Convergent Boundaries two plates collide with one another. The impact buckles the edge of one or both plates up into a rugged mountain range and sometimes bend the other down into a deep sea floor trench. A chain of volcanoes often forms parallel to the boundary, to the mountain range, and to the trench. Powerful earthquakes shake a wide area on both sides of the boundary. A new crust is formed.
13) What is Granite? Where is it found?
Granite is a light colored low density rock that makes up the continents.
14) What happens at Transform Boundaries? What is special about transform boundaries?
Transform Boundaries is when two plates slide past each other. Natural or man-made structures that cross the boundary are offset split into pieces and carry in opposite directions. Rocks that line the boundary are pulverized as the plates grind along creating a linear fault valley or undersea canyon. As the plates alternately jam and jump against each other earthquakes rattle through a wide boundary zone. No magma is formed and the crust is cracked and broken but is not destroyed.
About 2,000 earthquakes occur every year around the world.
2) What is the Tectonics Theory? Explain.
The Tectonics Theory is that the surface of the earth is not fixed and eternal but is in constant ever changing motion.
3) Where do the Tectonics Theory originate?
The Tectonics Theory originated deep within the plan.
4) What are earth's 3 main layers?
Earth's three main layers are the inner, outer core, mantle and the crust.
5) Where is Tectonic activity concentrated?
Tectonic Activity is concentrated in the upper 700 km of the mantle and crust.
6) What is the Lithosphere? Where is it located?
The lithosphere encases the entire Earth but is broken into pieces but into another lithosphere (100 km thick)
7) What is the Asthenosphere? Why is it important to plate tectonics?
The asthenosphere is a solid but soft layer of the upper mantle. The asthenosphere is squishy, it can deform and flow. The asthenosphere is below the lithosphere. It is important to plate tectonics
8) How fast do plates move ( average ) ?
Plates move averaging the same speed as our fingernails
9) What are the 3 types of plate boundaries?
The three types of plate boundaries are Divergent, Convergent, and Transform.
10) What happens at Divergent Boundaries? Where are these mostly located?
The plates pull apart, a narrow rift valley forms as the crust splits open, lava spews from long fishers and geysers heated water, frequent earthquakes strike along the rift. Beneath the rift magma or molten rock rises form the mantle it oozes up into the gap and hardens into solid rock forming new crust on the torn edges of the plates. Magma from the mantle solidifies into basalt, a dark dense rock that underlies the ocean floor. Thus at divergent boundaries oceanic crust made of basalt is created.
11) What kind of rock is Oceanic Crust made of ?
The Oceanic Crust is made of basalt.
12) What happens at Convergent Boundaries? What is often formed? Explain.
At Convergent Boundaries two plates collide with one another. The impact buckles the edge of one or both plates up into a rugged mountain range and sometimes bend the other down into a deep sea floor trench. A chain of volcanoes often forms parallel to the boundary, to the mountain range, and to the trench. Powerful earthquakes shake a wide area on both sides of the boundary. A new crust is formed.
13) What is Granite? Where is it found?
Granite is a light colored low density rock that makes up the continents.
14) What happens at Transform Boundaries? What is special about transform boundaries?
Transform Boundaries is when two plates slide past each other. Natural or man-made structures that cross the boundary are offset split into pieces and carry in opposite directions. Rocks that line the boundary are pulverized as the plates grind along creating a linear fault valley or undersea canyon. As the plates alternately jam and jump against each other earthquakes rattle through a wide boundary zone. No magma is formed and the crust is cracked and broken but is not destroyed.