1. Tectonics, Earthquakes, and Volcanoes Review

2. More Boundaries
Evidence
Boundaries
Volcanoes
Earthquakes
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3. 200
What 2 continents seem to fit together like puzzle pieces, one factor supporting the continental drift theory?
Answer: Africa and South America
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4. 400
What similar items were found on multiple continents which could only be there if the continents were once together?
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Answer: fossils

5. How do mountain ranges support the theory of continental drift?
600
How do mountain ranges support the theory of continental drift?
Answer: mountain ranges of similar age, composition, and formation are found on different continents
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6. 800
Why was Wegener’s continental drift theory not accepted when he proposed it in the early 1900’s?
Answer: he did not propose a way that the plates moved
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7. What types of plate contain the oldest rocks?
1000
What types of plate contain the oldest rocks?
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Answer: continental

8. What are the three types of boundaries between tectonic plates?
200
What are the three types of boundaries between tectonic plates?
Answer: convergent, divergent, and transform
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9. What causes the movement of the tectonic plates?
400
What causes the movement of the tectonic plates?
Answer: convection currents in the asthenosphere (lower mantle)
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10. 600
When on oceanic plate collides with a continental plate, which one will subduct and why?
Answer: oceanic because it is more dense
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11. 800
What is present in the middle of the Atlantic Ocean and how does the age of the rocks there compare to the age of the rocks near the coast?
Answer: mid-Atlantic Ridge, older
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12. What is the most common event that happens at a transform fault?
1000
What is the most common event that happens at a transform fault?
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Answer: earthquakes

13. At what type of tectonic plate boundary does subduction occur?
200
At what type of tectonic plate boundary does subduction occur?
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Answer: convergent

14. What kind of plates are colliding in the diagram below?
400
What kind of plates are colliding in the diagram below?
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Answer: 2 oceanic plates

15. 600
A deep place in the ocean caused by one ocean plate subducting under another ocean plate is called a _________.
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Answer: trench

16. What forms where a continental plate converges with an oceanic plate?
800
What forms where a continental plate converges with an oceanic plate?
Answer: continental volcanic arc and/or a trench
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17. 1000
What is the band of volcanoes that are found around the pacific ocean called?
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Answer: ring of fire

18. 200
What type of volcano has smooth, fluid lava flows and forms a large, spread-out cone?
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Answer: shield volcano

19. When magma reaches the earth’s surface, it is called what?
400
When magma reaches the earth’s surface, it is called what?
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Answer: lava

20. 600
The Hawaiian Islands were formed in the middle of the Pacific Plate rather than at a plate boundary. Science believe there must be a __________ located there which produced the islands.
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Answer: hot spot

21. What type of lava is smooth and “ropey.”
800
What type of lava is smooth and “ropey.”
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Answer: pahoehoe

22. 1000
This is the smallest type of volcano, created by light ejected material building a steep cone shape.
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Answer: cinder cone

23. What is the point underground where an earthquake originates?
200
What is the point underground where an earthquake originates?
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Answer: focus

24. Which type of seismic wave travels the fastest?
400
Which type of seismic wave travels the fastest?
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Answer: p-waves

25. 600
What is the device called that records the shaking of the ground during an earthquake?
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Answer: seismograph

26. 800
What is a tsunami?
Answer: an ocean wave caused by an earthquake
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27. 1000
If a p-wave arrives 4 minutes before an s-wave, how far away is the earthquake’s epicenter?
Answer: 1500 miles
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