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- 1. Multiple Choice
Identify 3 processes that cause or are related to Earth's tectonic plate movement?
ridge push, slab pull, continental drift
ridge push, slab pull, mantle convection
ridge push, slab pull, sea floor spreading
seafloor spreading, continental drift, super continent
- 2. Multiple Choice
Which of the following is a correct pairing?
mid-ocean ridge: convergent boundary
subduction zone: slab pull
subduction zone: radioactive decay
subduction zone: push ridge
- 3. Multiple Choice
Which of the following is/are a result of slab pull?
Volcanic activities
Faster plate movement
Both are correct
None are correct
- 4. Multiple Choice
Why do researchers think that slab pull is a major driving force of plate motion?
Plates experiencing slab pull move faster.
Slab pull is the most common plate motion on earth.
Researchers have no proof that slab pull is important.
None
- 5. Multiple Choice
What forms when molten rock within the mantle rises, cools down, then sinks back down to the core?
Induction cells
Tectonic plates
Convection cells
Fluctuation zones
- 6. Multiple Choice
When plates that are higher at the spreading center flow downhill with the help of gravity and eventually flatten out to the ocean floor, we call that ____________.
slab pull
ridge push
subduction
sea floor spreading
- 7. Multiple Choice
As the edge of a tectonic plate sinks back into the mantle, gravity (or its own weight) can assist its movement downward. This is known as ____________.
Slab pull
Slab push
Ridge push
Convection push
- 8. Multiple Choice
Which of the following is true?
The colder the rock the less dense it is, so it rises.
The hotter the rock the more dense it is, so it will sink.
The colder the rock, the more dense it is, so it will sink.
The hotter the rocks the less dense it is, so it will sink.
- 9. Multiple Choice
Which of the following figures best illustrate ridge push?
- 10. Multiple Choice
The process where oceanic crust slides under another plate and is melted is called ___________.
seafloor spreading
subduction
continental drift
recycling
- 11. Multiple Choice
Observe this diagram of a plate boundary. One statement BEST describes what is happening. It is that
the oceanic crust is melting.
the denser ceanic crust is subducting under the less dense oceanic crust
volcanic islands are forming.
the tectonic plates are moving away from each other.
- 12. Multiple ChoiceGeologists have long recognized that earthquakes are not randomly distributed on Earth but occur in concentrated areas that coincide with __________ and provide evidence for the theory of ___________ .mountain ranges; fault zones.continental borders; supercontinents.plate boundaries; plate tectonicsareas of liquid magma; sea floor spreading.
- 13. Multiple Choice
What is the source of energy that drives plate movement?
the subducton of the sea floor
the different densities of the oceanic and crustal plates
convection currents in the mantle and asthenosphere
the friction force between the plates that move past each other
- 14. Multiple Choice
Continental plates are ______ dense and ________ than ocean plates.
more; thinner
more; thicker
less; thinner
less; thicker
- 15. Multiple Choice
Ocean plates are _______ dense and _______ than continental plates
less; thinner
more; thinner
more; thicker
more; thicker
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