How did new evidence found by Marie Tharp and Bruce Heezen add onto continental drift and create the theory of plate tectonics?
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I apologize for the confusion. My mistake. The correct answer is:
They showed what the oceans' floors looked like, which helped explain how continents move over time.
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The correct statement regarding Newton's second law of motion and why it is easier to push an empty cart than a full one is:
A greater force is needed to move an object with a greater mass.
According to Newton's second law of motion (F = ma), the force required to move an object is directly proportional to its mass. In this case, since a full cart has a greater mass compared to an empty cart, it would require a greater force to achieve the same acceleration or movement. Therefore, it is easier to push an empty cart because it has less mass and requires less force to accelerate or move.
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The new evidence found by Marie Tharp and Bruce Heezen contributed significantly to the development of the theory of plate tectonics. In the 1950s and 1960s, Tharp and Heezen collected data through surveying the ocean floor, particularly the Mid-Atlantic Ridge. By creating detailed maps of the topography of the ocean floor, they discovered a prominent feature called the rift valley, which is a deep, elongated valley running along the axis of the ridge.
This discovery was groundbreaking because it provided evidence supporting the idea of seafloor spreading, which explained how continents could move. Tharp and Heezen found that the rift valley was associated with a continuous volcanic activity that created new crust along the Mid-Atlantic Ridge. They observed that the newly formed crust, molten at the rift valley, moved away from the ridge in opposite directions.
These findings challenged the prevailing belief that the continents were fixed and instead suggested a dynamic process of continental movement. Tharp and Heezen's data, along with other supporting evidence from geologists such as Harry Hess, formed the basis for the theory of plate tectonics.
The theory of plate tectonics states that the Earth's lithosphere, which consists of several rigid plates, is in constant motion. These plates interact with one another at plate boundaries, causing various geological phenomena, such as earthquakes, volcanic eruptions, and the formation of mountain ranges. The discovery of seafloor spreading, thanks to Tharp and Heezen's findings, became a crucial component of the plate tectonics theory.
Overall, the new evidence provided by Marie Tharp and Bruce Heezen reinforced the concept of continental drift and led to the development of the more comprehensive theory of plate tectonics. Their work revolutionized our understanding of Earth's geological processes and continues to shape our knowledge of the dynamic nature of our planet.
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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.
The correct answer is:
They showed what the oceans’ floors looked like helped explain how continents move over time.