Share 4.20 Unit Test: Plate Tectonics - Part 1
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Which two parts of the Earth make up the lithosphere?
crust and outer part of the mantle
Which section is part of the lithosphere?
crust and outer part of the mantle
Which word best describes the hot, weak, inner part of the upper mantle, which can flow?
lithosphere
crust and outer part of the mantle
core
crust
Which part of the mantle is still a solid but flows like a thick, heavy liquid?
crust
core
lithosphere
asthenosphere
Which evidence did Wegener make use of to develop the theory of continental drift?
The climate of Siberia has always been the same.
The Rocky Mountains are taller than the Appalachian Mountain
There is no evidence of glaciers anywhere in South America.
Similar fossils were found on different continents.
Which evidence did Wegener make use of to develop the theory of continental drift?
The climate of Siberia has always been the same.
Mountains in North America appear to be part of the same cha
There is no evidence of glaciers anywhere in South America.
The Rocky Mountains are taller than the Appalachian Mountain
Alfred Wegener's theory about Earth's past included a supercontinent made up of all the continents put together. Which word named the supercontinent?
Pangaea
Americas
Laurasia
Gondwanaland
Which term is described as a flat expanse of ocean floor?
continental shelf
guyots
deep-sea trenches
abyssal plains
Which term is described as a shelf of undersea land reaching a depth of about 200 meters (656 feet) and extending out from the shoreline?
deep-sea trenches
guyots
abyssal plains
continental shelf
Which term is described as a long, narrow depression in the ocean floor?
abyssal plains
continental shelf
guyots
deep-sea trenches
Which term is described as a seamount with a flattened top?
abyssal plains
continental shelf
guyots
deep-sea trenches
Which phrase gives two processes scientists think move the Earth's lithospheric plates?
gravity acting on the edges of plates and convection in the
gravity acting on the edges of plates and friction between t
convection in the mantle and pressure of magma on the edge o
friction between the plate and the asthenosphere and pressur
Which phrase gives two forces scientists believe are responsible for tectonic plate motion?
convection in the mantle and pressure of magma on the edge o
gravity acting on the edges of plates and convection in the
gravity acting on the edges of plates and friction between t
friction between the plate and the asthenosphere and pressur
What are the main causes of convection currents in the asthenosphere?
temperature and pressure
density and weight
weight and pressure
density and temperature
What activates a convection current, starting the flow of a fluid?
cold temperatures at the north pole
heated liquids at Earth’s surface
temperature differences in the mantle
iron-rich rocks in the mantle
At which type of boundary do lithospheric plates collide?
contour boundaries
gravitational boundaries
convection boundaries
convergent boundaries
