Seafloor Spreading
Plate Tectonics
Intrusive Igneous Rock Features
Volcanoes
Earthquake
100
What person is known for his famous theory known as seafloor spreading
Who is Henry Hess
100
Who was famous for his theory on continental drit?
Who is Alfred Wegener
100
When the magma cools and hardens inside the vent and mountain. When the mountatin erodes away the hardened magma is left.
What is a volcanic neck
100
An opening in the Earth that erupts gases,ash, and lava
What is a volcano
100
When rocks break they move along surfaces called what
What is Faults
200
What waves were used by the German scientist in WWI to detect submarines
What is sound waves
200
What was the name of the large landmass that Alfred Wegener named
What is Pangaea
200
Large can be up to several hundred meters long and several kilometers thick
What is batholith
200
What is the rigid layer is about 100km thick , made of the crust and upper mantle
What is the lithosphere
200
This device is used topinpoint the epicenter of an earthquake
What is a seismograph
300
How does seafloor spreading occur
What is magma forced upward and creating a new seafloor
300
What is the plastic like layer on Earth where the lithosphereic plates float on.
What is asthenosphere
300
When magma is squeezed into a crack that runs parallel to rock layers and cools/hardens
What is sill
300
What boundaries form volcanoes
What is divergent plate boundaries
300
This scale is used to measure magnitude of earthquakes
What is the Richter Scale
400
What device was used to detect magnetic fields on the ocean floor.
What is a Magnetometer
400
What is the name of the substance above the lithosphere
What is Continental crust
400
Magma that squeezes into that cuts across rock layers and cools/hardens
What is dike
400
Hot rock at these areas is forced toward the crust where it melts partially to form a
What is a hotspot
400
The Northridge and Kobe earthquakes occured on what day
What is January 17th
500
What ship began gathering information about rocks on the seafloor.
What is Glomar Challenger
500
How many plates are there Earth
What is 15 plates
500
After an eruption, the volcano can collapse which produces a large circular depression
What is a caldera
500
a broad volcano with gently slopipng side called
What is a sheild volcanoes
500
In which area are siemic waves not recived
What is the shadow zone
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