Summarise the topic tectonic plates
Answers
Answer:
Earth's outer solid crust.....the lithosphere is separated into plates that move on asthenosphere the molten upper layer of mantle.
although the reason for their formation is not proven many geologists believe that they are formed due to convection.
Answer:
Developed from the 19 Fifties through the Seventies, plate tectonic theory may well be a brand new trendy kind of the continent, initial planned by person Alfred the Great the good Alfred the Great Lothar geophysicist in 1912. Alfred the Great Lothar geophysicist didn't have a signal for the means the continents may move around the world, but researchers ar presently. plate tectonic theory may well be a theory that mixes geological technology, says saint van der Elst, associate earthquake knowledgeable at the Lamont-Doherty Earth Observatory of Polish University in Palisades, New York.
"Before plate tectonic theory, people had to come up with descriptions of natural science choices in their region that ar distinctive to that region," same Van der Elst. "Plate tectonics combines of those definitions and states that you {simply|that you just} simply got to be ready to justify all the planet science choices as if they were driven by the movements associated with these tectonic plates."
How many plates?
There ar nine big plates, in keeping with World Atlas. These plates ar named once the land of their origin. The nine largest plates ar North America, Pacific, Eurasian, Africa, Indo-Australia, Australia, India, South America and additionally the Antarctic.
The largest upland is that the Pacific Plate at 39,768,522 sq. kilometers (103,000,000 sq. kilometers). copious of it lies at a lower place the ocean. It extends northwest at a mean speed of seven.75 centimeters a year.
There ar many little plates around the world