Answer: Plate tectonic theory is the universally accepted theory that describes the processes of mountain building, sea floor spreading, volcanic eruption as well as the growth of continents.
This theory explains how two plates moves and what are the structures associated with this.
Plate tectonic movement is of three types-
- Divergent plate boundary
- Convergent plate boundary
- Transform plate boundary
Answer:
3. we would not exist because we are made of material that was recycled in galaxies.
Explanation:
If stars are randomly distributed in space, the elements like Hydrogen, Nitrogen, etc that releases when stars are dieing will not be close enough to come together to form a planet and thus lead to the formation of life on Earth.
Answer:
Evidences suggested are given below
Explanation:
Evidence given in support of the existence of Pangaea was given in Plate tectonic theory by Alfred Wegener.
1. The Jigsaw fit puzzle
2. Glacial ranges and mountain chains on various continents.
3. Formation and age of rocks, in southern hemispheres
4. Flora and Fauna evidence
- Apart from this poleward moving forces and forces of the sun and the moon gravity and west wind drift have seen to be responsible for the formation of hypotheses.
- As he stated that the continent of South America and Africa were once part of the same Gondwana landmass, Similarly the North America eastern side and Western side of Europe were the same as the ones that were part of the Lurata i.e Northern super landmass. This can be found in the evidence given in the paleomagnetism theory.
- Wegener believed that the continental crust is formed from the slabs and these slab or plates are lighter in weight and float on thick liquid asthenosphere oceanic crust with the help of winds and ocean currents. Thus he concluded that rocks were once part of the supercontinent that broke with the move
