- What evidence supports the theory of plate tectonics quizlet?
- What are the two pieces of evidence for plate tectonics?
- What are the 3 theories of plate tectonics?
- What causes tectonic plates to move?
- How do plate tectonics cause volcanoes?
- What are 4 pieces of evidence that support the theory of plate tectonics?
- How do earthquakes support the theory of plate tectonics?
- What are 5 pieces of evidence that support continental drift?
- What is the theory of continental drift and what evidence supports it?
- What does not support the theory of plate tectonics?
- How many tectonic plates are there?
What evidence supports the theory of plate tectonics quizlet?
Earthquakes and volcanic activity are also evidence of plate tectonics.
Divergent and convergent boundaries are both prone to frequent volcanic activity.
Does the lava in volcanoes come straight from Earth’s core.
Earth’s core is made of solid iron, not lava, so magma can come directly from the core..
What are the two pieces of evidence for plate tectonics?
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.
What are the 3 theories of plate tectonics?
Plates interact at three types of plate boundaries: divergent, convergent and transform. Most of the Earth’s geologic activity takes place at plate boundaries. At a divergent boundary, volcanic activity produces a mid ocean ridge and small earthquakes.
What causes tectonic plates to move?
The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
How do plate tectonics cause volcanoes?
As the denser plate edge moves downward, the pressure and temperature surrounding it increases, which causes changes to the plate that melt the mantle above, and the melted rock rises through the plate, sometimes reaching its surface as part of a volcano.
What are 4 pieces of evidence that support the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
How do earthquakes support the theory of plate tectonics?
Plate Tectonics is the theory supported by a wide range of evidence that considers the earth’s crust and upper mantle to be composed of several large, thin, relatively rigid plates that move relative to one another. Slip on faults that define the plate boundaries commonly results in earthquakes.
What are 5 pieces of evidence that support continental drift?
In the early part of the 20th century, scientists began to put together evidence that the continents could move around on Earth’s surface. The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.
What is the theory of continental drift and what evidence supports it?
Continental drift was a theory that explained how continents shift position on Earth’s surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.
What does not support the theory of plate tectonics?
Alfred Wegener. the first person to propose the theory explaining that the continents move. human distribution. one thing the theory of plate tectonics is NOT supported by. carbon dating, paleomagnetism, distribution of marsupials, glacial moraines.
How many tectonic plates are there?
sevenThere are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world’s largest plate at 39,768,522 square miles.