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yes, but very slowly. it would take thousands of years for any real distance to be created
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∙ 15y ago
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Why was continental drift more widely accepted after the discovery of seafloor spreading?
so basically the theory of continental drift, no one believed it. the idea that the continents were moving was just an hypothesis made by weigner. seafloor spreading made this hypothesis make sense.
How was the Atlantic Maritime Ecozone formed?
The Atlantic Ocean began to form when Pangea started to rift and break apart around 130 million years ago. First, Pangea broke apart into two landmasses: Laurasia and Gondwana, and a sea formed between them. Then, due to seafloor spreading, Laurasia separated into North America and Eurasia, and Gondwana separated into South America and Africa (as well as Antarctica and Australia). The space between these continents became the Atlantic Ocean. Even today, seafloor spreading continues to make the Atlantic Ocean wider by a few centimeters each year.
Why do fossils make you know the continents have drifted apart?
high
What occurs at divergent boundaries and creates new seafloor?
At divergent plate boundaries the spreading of the tectonic plates results in the reduced pressure of the underlying magma. As the spreading continues, lava fills in the area of spreading and cools, becoming the newest addition to the seafloor. This process occurs at a steady rate ranging from a few centimeters to several centimeters of new sea floor each year. However, at a different location opposite the newly formed seafloor are convergent plate boundaries where land and seafloor is destroyed to make room for new seafloor.
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!
Early in this century what was the prevailing view of how land animals migrated across vast expenses of ocean?
Opponents of continental drift claimed that due to transoceanic land bridges animals were able to make their way across the oceans. Seafloor spreading is the process of producing a new seafloor between two diverging planes.
What is the Theory of suspect terranes?
The Suspect Terrane theory posits that many terranes, or small pieces of the Earth's lithosphere, make up each of the continents. These terranes move over millions of years due to sea floor spreading and cause the formation of the continents at large.
Are the rocks that make up the ocean floor older or younger than those that make up the continents?
same age. the ice caps just melted on top over the rocks at the bottom of the sea.
How many continents are there in there?
There are 7 continents: Africa, Antarctica, Asia, Europe, North America, Australia (Oceania), and South America.
How does sea floor spreading make the continents move?
Under the oceanic crust is the layer of the earth called the mantle. This layer is moving rock that is very, very hot! As the hot material in the mantle pushes up through the crust in the sea floor, it cools and becomes new crust as it pushes out (spreads) the sea floor. This movement in the plates causes other plates (continental and oceanic) to move as well. This is how sea floor spreading causes continents to move.
Which 2 continents make up Eurasia?
Eurasia is made up of two continents: Europe and Asia. They are connected both geographically and culturally, forming the largest landmass on Earth.
What does a prism do to the light to make a rainbow?
It refracts the light, basically taking the light beam apart and spreading it out to see all the visible colors in the light spectrum. Water does the same thing and that is how rainbows are made.
