Volcanos
Magma flows through the _____________ and out of the _________________
What are the conduit and central vent?
This type of seismic earthquake wave arrives first.
What are primary waves.
Primary waves are compression waves that travel through the earth.
These are the three types of tectonic plate boundaries:
What are divergent, convergent, and transform.
This person came up with the idea of continental drift.
Who is Alfred Wegner?
This is the first layer of the earth:
What is the crust?
This type of volcano does not usually erupt and often has side vents.
What is a composite cone volcano?
These types of waves arrive second.
What are secondary waves.
Tectonic plates move at these speeds.
1-4 inches per year
This tool is used to record seismic waves.
What is a seismograph?
This is the word used to described the rising and fall of magma in earth's Mantle.
What is convection?
This is how Volcanos can form far away from plate boundaries.
What are hot spots?
Hot spots are created when especially hot magma rises to the earths crust and begin to melt away at the crust. This magma melting away the earths crust can then form a volcano.
These waves arrive third and are the most violent.
What are surface waves?
At a convergent boundary this determines which plate goes above and which one goes below.
What is the weight of the plate?
This group of volcanos is in the Pacific Ocean traces the Pacific plate.
What is the ring of fire?
This is what the mantle is made of.
This is the flow of hot gas and ash out of a volcano.
What is pyroclastic flow.
An earthquake under the sea can lead to this natural disaster.
What is a Tsunami?
This is the boundary which causes earthquakes in California.
The San Andreas Fault
This is the name of a volcano formed by a hot spot that is no longer above its magma chamber.
What is an extinct Volcano.
These two elements make up the inner and outer core of the earth.
What are iron and Nickle.
The largest volcano in the universe is on mars. This is its name and its type of cone.
What is Olympus Mons, the shield cone volcano.
Earthquakes are measured on this scale.
What is the Richter Scale.
This is the plate boundary where both earthquakes and volcanos occur.
What is a convergent boundary?
Double Jeopardy: a divergent plate under the sea leads to this phenomena:
What is sea floor spreading?
This is why the center of the earth remains solid despite 10,000 F heat.
What is very high pressure.