Layer Cake
This layers of Earth is the thinnest.
crust
True or False: the same fossils found on different continents suggest the continents were once joined together.
true
This type of boundary occurs when two plates slide past each other.
transform boundary
This type of earthquake wave is measured first.
p-wave
The outer core is made of ___ iron and nickel.
liquid
This scientist developed the current idea of plate tectonics.
Alfred Wegener
New crust is created at this type of boundary.
divergent boundary
The point under the surface where rocks move, causing an earthquake, is called this.
What process is found in the asthenosphere and works to move the plates above?
convection
This is the name of the last supercontinent.
Pangaea
Large mountains (not volcanoes) form at this type of convergent boundary.
continental-continental convergent boundary
The location of an earthquake is based on the latitude and longitude of this point, which is directly above the focus.
epicenter
This is made of the crust and upper mantle.
This is the term for when Earth’s magnetism is stored in rocks and is evidence of plate tectonics.
paleomagnetism
The ____ plate always subducts under the _______ plate.
denser, less dense
The scale used to measure earthquakes is called this.
Richter Scale
This is the part of the mantle that is plastic.
asthenosphere
Why were Wegener’s ideas initially rejected?
He couldn't explain how the plates move.
The Ring of Fire has many volcanoes and earthquakes because it has many of these types of boundaries.
convergent boundaries
Which type of earthquake wave moves the slowest?
surface wave