Plate Tectonics 1
The broken pieces of crust that are floating on top of the molten asthenosphere.
Tectonic Plates
The outermost layer of the Earth
Crust
This liquid hardens to make new rock
lava
This layer of the Earth is in the very center and is made of mostly iron.
The inner core
The layer of the Earth between the crust and the outer core.
mantle
This layer of the Earth contains the asthenosphere
the mantle
The area where two tectonic plates meet
Plate Boundary
This often forms when a continental plate converges with a continental plate
Mountains
This type of boundary is made when two tectonic plates collide
Convergent
This type of plate boundary is the leading cause of earthquakes
The pattern on a map made by graphing the location of most volcanoes
The Ring of Fire
A boundary where two plates slide along each other
Transform
At what type of plate boundary do plates move away from each other?
divergent boundary
The name for magma once it reaches the surface of the Earth
lava
The force from this causes the tectonic plates to move
convection currents
At what type of plate boundary does sea-floor spreading occur?
Divergent
DOUBLE JEOPARDY
The Earth's crust is broken up into ___ major tectonic plates.
7
DOUBLE JEOPARDY
Earthquakes occur where there are cracks in the Earth's surface called ______
faults
At what type of plate boundary forms mountains?
Convergent
Tsunamis can be caused by a volcanic eruption or _________
an earthquake
DOUBLE JEOPARDY
He developed the theory of continental drift
Alfred Wegner
This tool is used to measure the strength of earthquakes
seismograph
When our continents were believed to be one piece of land, we called this ___________.
Pangea
DOUBLE JEOPARDY
What can happen at every plate boundary?
A. Volcanoes
B. Mountains
C. Trenches
D. Earthquakes
E. All the above
All the above
DOUBLE JEOPARDY
When two plates move toward each other, one plate sometimes moves under the other. What is happening here?
subduction