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Question
How did new evidence found by Marie Tharp and Bruce Heezen add onto continental drift and create the theory of plate tectonics? (1 point)
Responses
They showed fossils of the same organism on multiple continents helped explain how continents float on the mantle.
They showed fossils of the same organism on multiple continents helped explain how continents float on the mantle.
They showed what the oceans’ floors looked like helped explain how continents move over time.
They showed what the oceans’ floors looked like helped explain how continents move over time.
They proposed that continents are pieces of the Earth's crust floating on top of the mantle.
They proposed that continents are pieces of the Earth's crust floating on top of the mantle.
They proposed that mountain ranges at the edge of continents helped explain how continents used to fit together.
They proposed that mountain ranges at the edge of continents helped explain how continents used to fit together.
All of the above responses are correct. Marie Tharp and Bruce Heezen's new evidence, including the discovery of the Mid-Atlantic Ridge and mapping the ocean floor, helped support the theory of continental drift and eventually led to the development of the theory of plate tectonics. Their findings showed that the continents are not fixed in place but rather move over time, and that the ocean floor spreads and creates new crust at the mid-ocean ridges. Additionally, the presence of mountain ranges at the edges of continents provided further evidence for how continents could have once been connected.
whats the best choice because its not multi choice
Based on the given options, the best response seems to be:
They showed what the oceans’ floors looked like helped explain how continents move over time.
This option specifically mentions the new evidence found by Marie Tharp and Bruce Heezen - the mapping of the ocean floors. This evidence provided crucial support for the theory of continental drift and plate tectonics as it showed how the ocean floor spreads and creates new crust, which in turn affects the movement of the continents.