Answer:
- Plate movements on Earth’s crust create stress.
- This adds energy to the crust, which then bends and breaks, forming mountains and geological basins.
Explanation:
The tectonic plates literally float over the magma. Thus, what makes the tectonic plates move is precisely the movement of this magma! And this movement does not happen at all, but in a cyclical variation, which we call Earth convection currents or cells.
The movement of tectonic plates moving over the asthenosphere (pasty part) interacting over time in a geodynamic process that results in the origin of mountains and geological basins, causing seismic quakes (earthquakes and tidal wave), volcanism, magmatism and other geological events (formation of mountain ranges and underwater pits) all due to these plate movements.
By looking at the four graphs given and the rock layers have not been overturned. The youngest rock layer out of the four is going to be the third graph. The correct answer is the conglomerate in outcrop 3.
A. I belive Mesopotamia was located around that area which was called "the
land of fertility"
Answer:
I think that President Roosevelt experiences in Georgia impacted his creation of the New Deal programs because had he not come to Georgia he wouldn't have seen what people needed help with and how they were negatively effected by the depression.
i. Using fossil evidences
ii. Similar rock lithologies at the edges of continent
iii. Climate clues
iv. Fitting of the continents into a puzzle
v. Sea floor spreading
Explanation:
Pangea was a super-continent on the earth which formed about 330 million years ago during the Paleozoic and began breaking up during the early Mesozoic, about 175 million years ago.
Most of the present day continents formed as a result of the separation of the Pangea in the early Mesozoic.
The first scientist to propose the existence of this super-continent was Alfred Wegener in 1912. He suggested the continental drift hypothesis to explain the separation of the land masses.
Today, the theory has been revised to the theory of plate tectonics which provides a better mechanism to understand the drifting of the continents.
Here are some of the evidences to support the existence of Pangea;
- Using fossil evidences: Mesosaurus, a reptile animal that lived during the Permian, was found in both South America and Southern Africa. Since this animal could not swim nor fly, only a jointed landmass could have made them present in both continents.
- Similar rock lithologies at the edges of continents: rock formations at the Western edge of Africa and South - Eastern part of Brazil matches with one another and have been believed to be once joined together.
- Climatic clues such as glacial tills that are confined to temperate and polar regions have been found in tropical regions.
- Wegener fitted the present day continent into a giant supercontinent and this provided a visual support for his claim.
- Evidences from sea floor spreading revealing magnetic reversals at divergent margins suggests the prevalence of plate tectonics i.e moving plates on earth.
This among many other evidences underscores the existence of a supercontinent called Pangea.
