Plate Tectonics
Earthquakes!
Volcanoes
Earth's Interior
Other
100
What are the three types of plate boundaries and how do the plates move at each?
Transform: Slide past
Divergent: Move apart
Convergent: Come together
100
Which location is closest to a major zone of earthquake and volcanic activity? WHY?
A, closest to a plate boundary where most earthquakes and volcanoes occur
100
What is the area around the Pacific Ocean called?
Ring of Fire
100
What are the layers of Earth's interior, from densest to least dense?
Inner core, outer core, mantle, asthenosphere, lithosphere
100
How do the tectonic plates move?
convection currents in the mantel
200
What boundary is between the African and South American plate? What type is it?
Mid Atlantic Ridge (divergent)
200
What type of boundary do Earthquakes occur at?
Transform
200
What type of plate boundary causes volcanoes?
convergent
200
Compared to continental crust, oceanic crust is:
D) Denser/heavier
200
Who came up with the Theory of Continental Drift?
Alfred Wegener
300
Describe or draw what happens at a subduction zone.
Oceanic crust goes underneath continental or other oceanic crust.
300
What type of wave is the most destructive?
Surface wave
300
What percent of Earth's volcanoes are part of the Ring of Fire?
75%
300
What is another name for the crust and part of the upper most part of the mantle?
Lithosphere
300
What are the names of the 3 types of volcanoes?
shield, cinder cone, composite
400
Why does oceanic crust always subduct?
Density! Oceanic (3.3 g/cc) is denser than continental (3.0 g/cc).
400
What is the period of less shaking called before an earthquake called?
foreshock
400
What do we call molten rock inside the Earth?
Magma
400
Which ONE of Earth's layers is liquid?
Outer core
400
Two tectonic plates bump into each other. One turns to the other and says....
NOT MY FAULT.
500
Collisions between continental and oceanic plates are most likely the result of:
a) hot liquid magma in the inner core
b) convection currents in the mantle
c) volcanic eruptions along coasts
d) meteor impacts in ocean basins
B) convection currents in the mantle
500
What is the plate boundary called in California ?
San Andreas
500
Why is the Ring of Fire called that?
It is where the Pacific plate meets with a lot of other plate boundaries creating volcanoes.
500
Which layer is the most dense?
core/inner core
500
What are shock waves called?
seismic waves