Download Chapter 7 Review - Plate Tectonics

Name ________________________________________ Date _____________________ Hour _________
Chapter 7 Review - Plate Tectonics
This review is simply a tool to help you to begin to think about and review some of the material we covered
and you must know for your test. In addition to completing this review, you should look over your notes,
worksheets, the book, and any other material given. EVERYTHING we discussed and learned about
should be studied.
1. Use the circle below to create a model of Earth’s interior. Label and color each of the following parts.
lithosphere
crust
inner core
asthenosphere
upper mantle
outer core
lower mantle
2. The crust is a layer that includes both ________________________ and _____________________.
3. What type of crust makes up a tectonic plate?
4. What is the rock composition of ocean crust and continental crust? _______________ _____________
5. Fill in the diagram with the appropriate terms.
6. What causes the Earth’s magnetic field?
7. What contribution did Wegener make towards the field of geology? Explain the significance.
8. What evidence did Wegener use to help support his theory? Provide detail/examples.
9. Why was Wegener’s hypothesis rejected?
10. Explain, using the picture provided, sea floor spreading. Your explanation should include the following
terms: mid-ocean ridge, deep-sea trench, subduction, rift valley, molten material, oceanic crust,
continental crust, denser, less dense, old rock, young rock.
11. Who proposed the idea of seafloor spreading? _____________________________
12. Why was he able to propose this theory? In other words, how did he figure out that seafloor spreading
was taking place?
13. Find the depth of the ocean floor it an echo sounder recorded its reading after 12.6 seconds.
14. What evidence (and why) supports the theory of sea-floor spreading?
Evidence
How it supports
Thermal Energy
Measurements
Sediment Dating
Rock Dating
Sediment Thickness
Magnetic Signature
15. Could volcanoes ever form near a subduction zone? Explain.
16. Sketch a picture of the ocean floor. Label the following: abyssal plain, seamount, mid-ocean ridge,
subduction zone, oceanic crust, trench, continental shelf, continent
17. Summarize the theory of plate tectonics.
18. Complete the chart.
Type of Plate Boundary
a.
d.
Type of Motion
Plates slide past each
other.
e.
g.
h.
Effect on Crust
b.
Feature(s) Formed
c.
Subduction or mountain
building
i.
f.
Mid-ocean ridge, ocean
floor
19. Organize the following words into 3 groups – you may reuse words as often as needed. convergent,
divergent, transform, collide, continental, oceanic, rift valley, mid-ocean ridge, subduction
20. The single landmass that broke apart 250 million years ago was ___________________________.
21. Why are the oldest parts of the ocean floor no older than 200 million years old?
22. How do magnetic stripes form on the ocean floor? Why are the stripe significant?
23. Predict what will happen. In the diagram below a plate of
oceanic crust is colliding with a plate of continental crust.
What will happen? Why?
Use the map to answer the questions that follow.
24. In what directions is the part of the plate
carrying Australia moving? In what
direction is the part carrying India moving?
25. As India and Australia move in different
directions, what type of plate boundary will
form between them?
26. What features could occur where the
northern part of the Indo-Australian plate is colliding with the Eurasian plate?