How did Sonar help prove plate tectonics?
Sonor showed the mid Atlantic ridge dividing the plates like the north Atlantic from the European plate. This provides evidence for Wegener’s theory of Continental Drift.
How does GPS provide evidence that the surface of earth moves over time?
GPS aids us in better understanding our planet by allowing us to measure how the surface of the Earth moves. Much of this motion causes earthquakes, builds mountains, and, indirectly, creates volcanoes. The surface of the Earth is broken up into “tectonic plates” that move in different directions and speeds (Figure 1).
What types of technology have helped us gain a better understanding of the movement of Earth’s plates?
Also, the theory of seafloor spreading helps to support the theory of plate tectonics because it explains how the continents move. Furthermore, a GPS satellite in space can be used to measure how far and how fast the continents move each year.
How did Sonar help support the theory of seafloor spreading?
When the signal came back it painted a picture in a way that showed the ocean floor and what it looked like such as the different depths. The use of sonar showed how much deeper the ocean was compared to what people thought, this really opened peoples eyes to the new things that lie within the oceans depths.
What are four pieces of evidence supporting Pangea?
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
What is the importance of seafloor spreading in understanding the origin of the plate movement?
Answer: Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere.
What are the lines of evidence that support the plate movement?
Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species.
How is seafloor formed?
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
Where is seafloor being destroyed What is the process called?
subduction zones