11. The Seafloor Spreading Theory demonstrates that A. all continents are drifting. B. ages of rocks near a ridge are older than the ones far from it. C. fossils of plants and animals are found in...

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Extracted text: 11. The Seafloor Spreading Theory demonstrates that A. all continents are drifting. B. ages of rocks near a ridge are older than the ones far from it. C. fossils of plants and animals are found in almost all continents. D. hot and less dense material from below the Earth's crust rises towards the surface at the mid-oceanic ridge. 12. If there are MORE mid-ocean ridges than subduction zones, what happens to the ocean? A. It gets larger. 13. "The iron materials found in the seafloor can give information about the Earth's magnetic field direction." This statement is: A. True B. It gets smaller. C. It sinks. D. Nothing will change. D. Never C. Sometimes help explain why Earth is not getting any larger even though the tectonic plates are always moving. B. False 14. B. Subduction zones C. Fossils D. Volcanoes A. Earthquakes 15. Why is the Earth not getting bigger despite the fact that molten materials are gradually coming out from the mid-oceanic ridge A. Because everything is being consumed in the subduction zone. B. Because of the faster rate of movement of materials from the ridge. C. Because older oceanic materials are pushed away and slowly consumed in the subduction zone. D. Because the rate of coming out of new oceanic materials and destruction of older oceanic crust are the same.