Chapter 7 Earth's Interior Test
Continental-oceanic collisions can also be called...
subduction zones.
What is the area where two tectonic plates meet called?
boundary
The order of the layers of the Earth from the surface to the center.
crust, lithosphere, asthenosphere, mesosphere, outer core, inner core
At what boundary do you find sea-floor spreading?
divergent boundary
What do scientists use the global positioning system for?
to measure tectonic plate motion
Where are volcanoes most likely to form?
along plate boundaries
Tectonic plates are made of...
both continental and oceanic crust.
Mid-ocean ridges are the most common type of...
divergent boundary.
A possible result of plates moving along a transform boundary is...
earthquakes
What is the outermost layer of the Earth that includes the crust and upper mantle?
lithosphere
Where does sea-floor spreading take place?
mid-ocean ridges
What can tectonic plates form when they converge?
mountains
What is subduction?
movement of one tectonic plate under another
When an oceanic plate collides with a continental plate, the oceanic plate is usually subducted because...
oceanic crust is denser and thicker than continental crust.
The part of the Earth that is molten (totally liquid layer) is the...
outer core (liquid nickel and iron).
Evidence for sea-floor spreading has come from...
patterns of magnetic minerals on the ocean floor.
Wegener thought that all continents were once together in one large continent called...
Pangea
What happens to the density of material in the asthenosphere as it heats up?
Density decreases as temperature increases.
Why is Earth's core more dense than the rest of the Earth?
More dense material settled toward the center early during Earth's development, Earth's spin causes the denser material to move toward the center, lighter materials float upon the more dense materials.
What occurs at mid-ocean ridges that supports continental drift and plate tectonics?
New crust is formed.
Which layer of Earth's interior is BEST associated with a combination of very hot molten METALS?
Outer core
How does fossil evidence support Wegener's hypothesis of continental drift?
Similar fossils found on far apart landmasses suggest that the continents were once a single landmass.
Which layer of Earth's interior is BEST associated with convection currents that move the tectonic plates?
The Asthenosphere in the Mantle.
Do the Boundary Dance to remember each of the types of plate boundaries!
Transform - Slide past each other Divergent - Spread away from each other Convergent - Collide or crash together
The deep interior of the Earth can be mapped using...
seismic waves
Scientists' knowledge of the Earth's interior has come primarily from...
studying seismic waves generated by earthquakes.
Most earthquakes happen at the edge of...
tectonic plates
Tectonic plates float on...
the asthenosphere