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What evidence supports the theory of plate tectonics?
The shape of the continents, the distribution of earthquakes, the symmetric magnetic banding of the sea floor ether side of the mid oceanic ridges, the mid oceanic ridges, back arc basins, deep sea trenches, the fiery ring of the Pacific, The distribution and chemistry of volcanoes, atolls, paleo magnetism, fossil evidence and the distribution of species. (there may be more evidence).
What theory combined sea floor spreading and continental drift?
Plate Tectonics
What discovery did scientist make when comparing the age of the sea floor to that of the continents?
The scientists realized that the continents were much older, leading them onto the theory of Sea Floor Spreading!
Which theory suggested that the earth was once a single supercontinent that gradually broke up into the continents that we know today?
Sea floor spreading Subduction Plate tectonics Continental sift theory
What is the relationship between the age of rocks on the ocean floor and their distance from the mid ocean ridge?
The age of rocks on the ocean floor increases with distance from the mid-ocean ridge. This is due to the process of seafloor spreading, where new crust is formed at the ridge and then gradually moves away as tectonic plates shift. As a result, rocks closest to the ridge are younger, while those farther away are older, providing evidence for the theory of plate tectonics.
What three pieces of edivence for Wegeners theory can from the sea floor?
Plants,animals,and something else
Wegeners hypothesis of continental drift was finally confirmed by?
evidence supporting the idea of sea-floor spreading.
Which one of the following pieces of evidence did Wegener use to support his theory of continental drift?
the age of the rocks in the sea floor is all the same
What is the name of the newer theory that replaced Wegeners theory?
In the 1960s, researchers discovered several mountain ranges on the ocean floor. These mountains suggested that the earth's crust consists of 20 slabs or plates. The discovered led to a new theory called "Plate Tectonics."
What provides the most evidence for the theory of plates tectonic?
The spreading of the sea floor.
What are two pieces evidence for cracks in the ocean floor?
molten material and drilling samples
Why was wegeners theory accepted in the 1960s?
Wegener's theory of continental drift gained acceptance in the 1960s primarily due to the development of plate tectonics, which provided a comprehensive framework explaining the movement of Earth's lithosphere. Advances in technology, such as sonar mapping of the ocean floor and the discovery of mid-ocean ridges, revealed evidence of seafloor spreading. Additionally, paleomagnetic studies showed that continents had shifted over geological time, supporting Wegener's ideas. This confluence of evidence from multiple scientific disciplines ultimately validated his theory.
Which piece of evidence did Alfred Wegener used to develop the theory of continental drift?
hotspots on the ocean floor
Which piece of evidence did Alfred wegener use to develope the theory of continental drift?
hotspots on the ocean floor
What do scientists now know about earth that would have answered the scientists who rejected wegeners theory?
Scientists now know about plate tectonics, which explains how Earth's outer shell is divided into large plates that move and interact with each other. This understanding supports Wegener's theory of continental drift, as it provides a mechanism for the movement of continents over time. Additionally, evidence from ocean floor mapping, seafloor spreading, and magnetic striping further supports the concept of plate tectonics.
When was the first concrete evidence found to support the theory that new ocean crust formed at vents in the ocean floor?
1977!
What are pieces of evidence that support the idea of Pangaea?
Pieces of evidence supporting the idea of Pangaea include matching geological formations and fossils across continents, such as the Appalachian Mountains in the eastern U.S. aligning with Scotland's Caledonian Mountains. Additionally, the fit of modern-day continents like South America and Africa along their coastlines and similarities in rock types and ages found on different continents further support the theory of Pangaea. Evidence from paleoclimate studies, like glacial deposits in tropical regions, also contributes to the theory.
