Ocean Floor Subducts Under Continents Because

question 20

Multiple Choice

Ocean floor subducts under continents because

• A)the ocean floor has a lower density and therefore sinks more easily.
• B)the ocean floor is made of silica and aluminum s and is heavier than continental material.
• C)the weight of the continents is so great that they push the ocean floor material downward.
• D)the ocean floor is made up of silica and magnesium and is more dense than continental material.