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Geography, Other Sciences
5th -
7thgrade
Continental Drift and Seafloor Spreading
11 questions
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- 1. Multiple ChoiceWhat is seafloor spreading?When magma erupts from mid-ocean ridges and creates new oceanic crustWhen magma erupts from deep ocean trenches and creates new oceanic crustWhen ice cream erupts from mid-ocean ridges and creates new oceanic crustWhen the seafloor spreads apart
- 2. Multiple ChoiceWhat are three pieces of evidence that support seafloor spreading?Ocean material, zebra stripes, drilling samplesTerrain features, fossils, climateOcean material, magnetic stripes, drilling samplesOcean material, magnetic stripes, fossil samples
- 3. Multiple ChoiceTrue or False: Most scientists did not accept Wegener's theory of continental drift.TrueFalse
- 4. Multiple ChoiceWhat is Glossopteris?A fernlike plant that wasn't found on many major land masses that had broken apartA fernlike plant that was found on many major land masses that had broken apartGloss on potteryA treelike plant that was found on many major land masses that had broken apart
- 5. Multiple ChoiceWhat was Pangaea?A supercontinent that existed about 250 million years agoWegener's breakfastA supercontinent that existed about 350 million years agoA supercontinent that existed about 300 million years ago
- 6. Multiple ChoiceWhat is a fossil?Any trace of an ancient organism that has been preserved in rockAny trace of a recent organism that has been preserved in rockAny piece of rockDead things
- 7. Multiple ChoiceTrue or False: Fossils of tropical plants were found on an island in the Arctic Ocean.TrueFalse
- 8. Multiple ChoiceTrue or False: Sonar wasn't used to map mid-ocean ridges.TrueFalse
- 9. Multiple ChoiceWhat are mid-ocean ridges?Ridges in the middle of the oceanMountain ranges at which seafloor spreading may or may not occurSeafloor spreadingUnderwater mountain ranges at which seafloor spreading occurs
- 10. Multiple ChoiceWhat is subduction?A process in which oceanic crust is recycled into the mantle through deep ocean trenchesA process in which continental crust is recycled into the mantle through deep ocean trenchesSubterranean duct tapeA process in which oceanic crust is created at mid-ocean ridges
- 11. Multiple ChoiceTrue or False: An ocean with many trenches will shrink, and an ocean with many ridges will shrinkTrueFalse
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