Earth's Layers
How many layers does earth have?
4 Layers.
How many major tectonics are there?
Seven.
When an earthquake happens near the ocean this could be caused.
A tsunami.
When a volcano is not active the volcano is what?
Dormant.
What is another name for lava?
Magma.
Where are the asthenosphere and lithosphere located?
The lithosphere is below the crust and the asthenosphere is below the lithosphere.
Earth is broken into pieces called what.
Tectonic plates.
List the earthquake waves.
Primary wave, Secondary wave, and Surface-wave.
If a crater and the land around it were to collapse this would be formed.
A caldera.
Is earth's outer core liquid or solid?
Liquid.
Name the layers of the earth.
The crust, mantle, outer core, inner core.
Explain seafloor spreading.
Lava erupts at a spreading center creating a new oceanic crust.
The scale for measuring earthquakes is called what?
The Richter scale.
List the three types of volcanoes.
Cinder cone, composite, and shield.
explain how the Hawaiian islands where formed.
Hotspots produce chains of islands like Hawaii.
Explain what continental and oceanic crust is composed of.
Continental crust: Granite, Sedimentary, and Metamorphic rock.
Oceanic crust: Basalt.
Pangaea.
LIst and describe the faults.
Normal fault: When the footwall goes above the hanging wall.
Reverse fault: when the footwall goes below the footwall.
Strike-slip fault: when the footwall and the hanging wall rub together.
list and describe the types of lava.
Pahoehoe lava has a low velocity and a'a' lava has a high velocity and is high in silica.
Tectonics move at a place called this.
Spreading center.
How many layers are in earth's mantle?
Three layers.
List the types of plate boundaries and describe what they do.
Divergent boundary: where plates move apart.
Convergent boundary: where they come together.
Transform boundary: where they move past each other.
Explain how liquefaction works.
When water-saturated soil loses strength.
explain lahar and pyroclastic flow.
lahar is a mixture of flowing water, dirt, and other sediment and pyroclastic flow is a mixture of deadly gasses.
List at least 5 parts of a volcano.
Vent, crater, throat, side vent, conduit pipe, branch pipe, and magma chamber.