Download Study Guide for Sea-Floor Spreading Test Please know the following

Study Guide for Sea-Floor Spreading Test
Please know the following:
1. Be able to label the Mid-Ocean Ridge diagram in your notebook.
2. (See diagram and question below)
Question: Looking at Diagram 2, the Mid-Ocean Ridge is the youngest part of the seafloor—why is this,
and where would the oldest part of the seafloor be located and why? Be sure to use vocabulary.
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3. Know how mid-ocean ridges are formed.
4. What is a divergent boundary?
5. What is LEAST NECESSARY for plate tectonics?
6. What happens between convergent plate boundaries and oceanic crusts?
7. Where does subduction of ocean crust occur?
8. How do we know that the Australian and Indian plates are separating?
9. Which geologist made a connection that America and Africa fit together like
a jigsaw puzzle?
10.What is the process by which new oceanic crust forms as magma rises
towards the surface and solidifies?
11.Where is new seafloor material formed?
12.What provides evidence that the continents on tectonic plates have moved
away from each other in the past?
13.Where does the recycling of seafloor material occur?
14.When looking at the shape of the continental shelves that surround South
America and Africa, it can be observed that the continental shelves fit
together. What does this picture support?
Open-ended Response:
1. Which type of tectonic plate movement results in the formation of midocean ridges?
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2. Every few hundred thousand years the magnetic poles of Earth reverse.
Rocks that contain iron provide a record of both normal and reversed
magnetic poles. The diagram below shows the pattern of normal and
reversed magnetic poles as recorded in the rock on either side of the
Mid-Atlantic Ridge. How does this show evidence of seafloor spreading?
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You will need to know the following vocabulary terms—please make
flash cards to study these!