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
core
crust and outer part of the mantle
Which part of the mantle is still a solid but flows like a thick, heavy liquid?
crust
lithosphere
core
asthenosphere
Which evidence did Wegener make use of to develop the theory of continental drift?
There is no evidence of glaciers anywhere in South America.
The climate of Siberia has always been the same.
The Rocky Mountains are taller than the Appalachian Mountain
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?
Americas
Laurasia
Pangaea
Gondwanaland
Which term is described as a flat expanse of ocean floor?
abyssal plains
deep-sea trenches
continental shelf
guyots
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?
continental shelf
guyots
deep-sea trenches
abyssal plains
Which term is described as a long, narrow depression in the ocean floor?
abyssal plains
guyots
continental shelf
deep-sea trenches
Which term is described as a seamount with a flattened top?
abyssal plains
deep-sea trenches
guyots
continental shelf
Which phrase gives two processes scientists think move the Earth's lithospheric plates?
gravity acting on the edges of plates and friction between t
friction between the plate and the asthenosphere and pressur
convection in the mantle and pressure of magma on the edge o
gravity acting on the edges of plates and convection in the
Which phrase gives two forces scientists believe are responsible for tectonic plate motion?
gravity acting on the edges of plates and friction between t
gravity acting on the edges of plates and convection in the
friction between the plate and the asthenosphere and pressur
convection in the mantle and pressure of magma on the edge o
What are the main causes of convection currents in the asthenosphere?
density and weight
temperature and pressure
weight and pressure
density and temperature
What activates a convection current, starting the flow of a fluid?
heated liquids at Earth’s surface
temperature differences in the mantle
cold temperatures at the north pole
iron-rich rocks in the mantle
At which type of boundary do lithospheric plates collide?
convection boundaries
convergent boundaries
contour boundaries
gravitational boundaries
