earth's layers
earth's moving crust
earthquakes
volcanoes
miscellaneous
100
which part of the earth is composed of the elements oxygen, silicon, and aluminum?
The crust 
100
The hypothesis of continental drift
What is the continents were all join on a single landmass, pangaea.
100
The rock below the fault
what is foot wall
100
Explain how earthquakes affect Earth's surface
They can create waves of tsunami in the ocean or land slide.
200
Which is the largest layer of the earth?
the mantle 
200
The theory of plate tectonics
What is the seafloor spreading as the mechanism to explain plate movement.
200
The rock above the fault
what is hanging wall
200
The crater
What is the summit of the volcano
200
The comparison between the cinder cone, composite and shield volcanos


They all erupt.
300
which one of earths layers is made out of iron and nickle?
the core
300
The Plate boundaries
What is Tectonic plates meeting point.
300
Describe the three types of faults 
normal fault: The hanging wall goes under the footwall 

reverse fault: the hanging wall goes above the foot wall

strike slip fault: they go in a horizontal movement  

300
The caldera
what is when the crater and the land around the volcano collapse after an eruption 
300
Compare and contrast the inner and outer core
The inner core is mostly iron and the outer core is iron and nickel
400
how is continental crust different than oceanic crust?
continental crust is more thick than oceanic crust and oceanic crust is denser than continental crust.
400
The three types of plate boundaries
What is divergent, convergent and transform boundaries
400
what is one way that a earthquake can affect earth's surface?
By creating tsunamis 
400
The sill 
what is a branch pipe does not reach Earths surface and the magna forms.
400
what are two types of Earth's crust
what is continental crust and oceanic crust.
500
The two main layers of the Earth
What is crust and mantle
500
The plates move
from the action of convection currents that are created by the heating and cooling of the magna in the mantle
500
Differentiate among P wave S wave L wave
P wave travels through the planet, S wave travels through solids and L wave travels slower than a P wave or S wave
500
The dike 
what is a layer of igneous rock that cuts through the surrounding bedrock diagonally
500
Compare continental and oceanic crust
Continental crust is made of granite, sedimentary and metamorphic rock but the oceanic only has basalt composition and it is a lot thinner.
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