Plate
Tectonics!
When
Continents
Can't
Stay Put!
100
During the time of Pangaea...
organisms lived side-by-side that are now fossils on distant continents.
there was no Atlantic Ocean.
there was one magnetic north pole.
all of these.
all of these
100
True or False?
The continents can fit together like pieces of a puzzle.
True
100
Which process moves heat from the warmer to cooler places until all are the same temperature?
radiation
convection
conduction
none of the above
conduction
100
_S__________ waves are released in all directions from an earthquake.
Seismic
100
The lithosphere...
is partially molten
is brittle
behaves plastically
can flow
is brittle
100
True or False?
Continental crust is thicker than oceanic crust.
True
200
The Himalayan Mountains rise at a(n) _c_____________ plate boundary.
convergent
200
Scientists learn about our planet’s interior from...
tracking seismic waves
probes in deep mines
diving into deep ocean trenches
satellite imagery
tracking seismic waves
200
The _m______________ is composed of hot rock that can flow.
mantle
200
True or False?
Continental crust is too thick for hotspot volcanoes to break through.
False
200
Subduction destroys older crust at deep sea _t_____________.
trenches
200
What type of plate boundary is found at the San Andreas Fault?
convergent
divergent
transform
none of the above
transform
300
With distance from the mid-ocean ridge...
the crust becomes thicker
the sediment becomes thinner
the rocks become younger
none of these
the crust becomes thicker
300
True or False?
Some rocks found on opposite sides of the Atlantic are extremely similar in type and age.
True
300
True or False?
In a magnetic reversal, the north and south magnetic poles switch.
True
300
Everywhere across the seafloor, scientists find...
flat, sediment covered bathymetry.
increasing crust thickness toward the mid-ocean ridges.
magnetic stripes with normal or reversed polarity.
none of the above
magnetic stripes with normal or reversed polarity.
300
True or False?
The magnetic field is caused by convection in the mantle.
False.
300
True or False?
The Himalaya Mountains rise up at a transform plate boundary.
False
400
True or False?
A new supercontinent forms about every 500,000,000,000 years.
False
400
The core is composed of _m___________.
metal
400
Lithospheric plates move at the rate of a few _?_cm__ per year.
1 cm (centimeters)
400
The edges of continental plates can be drawn by connecting the dots that mark _e____________ epicenters.
earthquake
400
True or False?
Wegener used fossil evidence to support his continental drift hypothesis.
True
400
Volcanoes are found at __________ plate boundaries.
all three types of
divergent and convergent
convergent and transform
transform and divergent
divergent and convergent
500
__A_________p________ are flat areas in ocean basins that are covered with sediment.
Abyssal plains
500
How did Wegener explain the presence of Mesosaurus fossils on Africa and South America?
The continents were joined when Mesosaurus lived and then moved apart.
Mesosaurus swam across the Atlantic Ocean
a land bridge across the Atlantic Ocean connected the two continents
none of these
The continents were joined when Mesosaurus lived and then moved apart.
500
Geological activity that occurs away from plate boundaries is called _i______________ activity.
intraplate
500
True or False?
Metallic meteorites represent Earth's core.
True.
500
All deep sea trenches are located...
in the polar regions
in the middle of the oceans
at the edges of continents
near chains of active volcanoes
near chains of active volcanoes
500
A _c_______________a_____ is a line of volcanoes caused by the subduction of an oceanic plate beneath a continental plate.
continental arc
