Volcanoes
Earthquakes
Sea Floor Spreading
Continental Drift
Miscellanies
100
Some volcanoes form above the....
What is subduction zone
100
ocean waves caused by eqarthquakes are called seismic sea waves or_____________
What is tsunamis
100
Harry Hess says that hot, less dense material below Earths crust rises toward the surface at the.......
What is Mid-ocean ridges?
100
Who had ideas about this and the big "hypothesis"
Alfred Wegener
100
Earths crust and party of the upper mantle are broken into sections
What is Plate tectonics
200
an area of unusually high volcanic activity
What is Hot spot
200
What are the three types of faults
What is normal fault, reverse fault, strike-slip fault
200
As the seafloor spreads apart, ________ is forced upward and flows from the cracks
What is Magma
200
What were the main types of evidence for continental drift?
Rock, fossil, and climate clues
200
The plastic like layer below the lithosphere is called............
A. Chromosphere B. Lithosphere C. Asthenosphere D. Lithospheric plates
300
what is pyroclastic flow
volcanic ash and debris rushing down the side of a volcano
300
Why do most earthquakes occur near plate boundaries
as tectonic plates move their edges experience stress if part of a plate
300
In 1968, scientist aboard the research ship_______________________ began gathering information about the rocks on the seafloor
Glomar Challenger
300
What land mass did Wegener suggest that broke apart about 200 million years ago?
What is Pangaea
300
The cycle of heating, rising, cooling, and sinking Is called
What is convection current
400
What is lava in a volcano
molten rock that reaches the earth's surface through a volcano or fissure
400
What produces the forces that cause rocks to break and faults to form?
surface of earth is in constant motion because of forces inside the planet
400
As new seafloor moves away from the mid-ocean ridge, it____________________________
cools, contracts, and becomes denser.
400
What fossil supports continental drift?
What is Glossopteris
400
What causes plates to move
The same basic process that occurs when you heat soup
500
what is the difference between effusive and explosive eruption
effusive is characterized by the outpouring of lava onto the ground explosive is characterized by the violent fragmentation of magma
500
Vibrations produced by the breakig of rock
What is an Earthquake
500
Magnetic lines or directions of force leave earth near the __________ and________ poles
What is south and north
500
How could continents drift?
The force behind this plowing was thought to be the spin of earth on its axis
500
When do transform boundaries occur
When one plate slips past another
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