WorksheetsPearson Chapter 4 - Plate Tectonics
Total questions: 22
Worksheet time: 26mins
Who was Alfred Wegener?
A German scientist who created the theory of continental drift.
A German scientist who created the theory of seafloor spreading.
A German scientist who created the theory of plate tectonics.
A French scientist who created the theory of continental drift.
What is the theory of continental drift?
Wegener's hypothesis that the continents were once separated and have since then joined together.
Wegener's hypothesis that all the continents were once joined together in a single landmass and have since drifted apart.
Bill Nye's hypothesis that all the continents were once joined together in a single landmass and have since drifted apart.
A theory in which the continents drift
What was Pangaea?
The supercontinent that Wegener hypothesized the continents were once joined in
Wegener's breakfast: Pancakes and eggs
A supercontinent that existed 400 million years ago
A supercontinent that Tharp hypothesized the continents weren't once joined in
Select the pieces of evidence that support the theory of continental drift.
Fossils of animals that could not swim were found on different landmasses separated by continents. When put together, the locations of the fossils created a band.
Mountain ranges, coal deposits, and glacial sediment deposits matched up on different continents.
The coastlines of South America and Africa fit together almost perfectly.
Pillow-shaped rocks were found on ocean floors, indicating molten material must have cooled quickly.
Tropical plant fossils were found on an Arctic island. This indicates that the landmass must have moved away from the equator, therefore becoming cooler and not able to support tropical plant life.
Why was Wegener's hypothesis rejected by most scientists?
Wegener did not have enough evidence to support his theory.
The scientists were being mean.
Wegener couldn't provide a mechanism as to how the continents plowed through the ocean.
It wasn't good enough.
What are mid-ocean ridges?
Continental mountain ranges at which land spreading occurs.
Ridges in the middle of the ocean
Underwater mountain ranges at which subduction occurs.
Long, underwater mountain ranges at which seafloor spreading occurs.
What is sonar?
Sound Opaque Nothing And Readiness
A device that uses light to measure the distance to an object; this was used to discover mid-ocean ridges
Futuristic technology
A device that uses sound waves to measure the distance to an object; this was used to discover mid-ocean ridges.
Which two statements about seafloor spreading are true?
An ocean with many ridges and few trenches will grow
An ocean with many ridges and many trenches will grow.
An ocean with few ridges and many trenches will shrink.
An ocean with few ridges and few trenches will shrink.
What is the process of seafloor spreading?
When the seafloor spreads
When mid-ocean ridges make the Earth bigger
When mid-ocean ridges continually add new material to the ocean floor
When volcanoes continually add new material to continental crust
Choose the evidence that supports the process of seafloor spreading.
Pillow rocks on the ocean floor indicate that molten material cooled quickly.
Identical magnetic stripes created by reversals of the magnetic field indicate both sides of ridges spread at the same rate.
The coastlines of South America and Africa fit together almost perfectly.
Drilling samples taken progressively further from mid-ocean ridges are progressively older the farther from the ridge.
Mountain ranges, coal deposits, and glacial sediment deposits on different continents line up.
What are deep-ocean trenches?
Locations in oceans at which oceanic crust subducts and is recycled in the mantle.
Locations in oceans at which continental crust subducts and is recycled in the mantle.
Trenches deep in the ocean.
None of the above
What is subduction?
The process in which continental crust forces denser oceanic crust downwards, where it is recycled in the mantle
The process in which denser oceanic crust forces continental crust downwards, where it is recycled in the mantle
The process in which continental crust is destroyed in the mantle
Subterranean duct tape
What are plates?
The pieces that the ground is broken into.
Pieces of a broken eggshell
The pieces that the Earth's lithosphere are broken into.
a shallow, usually circular dish, often of earthenware or porcelain, from which food is eaten.
How do plates move?
Convection currents in the mantle act like a conveyor belt
They just move
The ocean pushes the plates
Convection currents in the mantle don't act like a conveyor belt
What is the theory of plate tectonics?
The theories of general relativity and the Riemann Hypothesis
The theory of tectonic plates
The theories of seafloor spreading and continental drift together, it states that Earth's plates are in slow, constant motion, driven by convection currents in the mantle
The theories of seafloor spreading and general relativity
What are the two different kinds of crust?
Continental
Pie
Oceanic
Bread
Describe divergent boundaries.
Plates diverge from each other and create rift valleys (continental) or more crust (oceanic)
Plates converge with each other, they subduct (oceanic and oceanic or continental to continental) or they create mountains (continental to continental)
Plates move beside each other and create earthquakes, crust is neither created nor destroyed
Describe convergent boundaries.
Plates diverge from each other and create rift valleys (continental) or more crust (oceanic)
Plates converge with each other, they subduct (oceanic and oceanic or continental to continental) or they create mountains (continental to continental)
Plates move beside each other and create earthquakes, crust is neither created nor destroyed
Describe transform boundaries.
Plates diverge from each other and create rift valleys (continental) or more crust (oceanic)
Plates converge with each other, they subduct (oceanic and oceanic or continental to continental) or they create mountains (continental to continental)
Plates move beside each other and create earthquakes, crust is neither created nor destroyed
Define faults.
breaks in Earth's crust where rocks have slipped past each other
breaks in Earth's mantle where rocks have slipped beneath each other
breaks in rocks
responsibility for failure or a wrongful act
What are rift valleys?
A lush, green valley
A deep valley created by two diverging tectonic plates
A valley with rifts
A tall mountain created by two converging tectonic plates
Movement of Earth's plates have changed...
Location of the continents
Size and shape of the oceans
Change of Earth’s surface: producing earthquakes, volcanoes, mountain ranges, and deep-ocean trenches
The food we eat
None of the above
