Question

FAN AND MEDAL!!!



The Earth's plates moved over millions of years, bringing continents and other features of the Earth to their present arrangement. This movement of the lithosphere is explained by ___ .



A.


continental drift


B.


the principle of of superposition


C.


the theory of plate tectonics


D.


nuclear fusion

Answer 1

Continental drift is the movement of the Earth's continents relative to each other, thus appearing to drift across the ocean bed. The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596.

Answer 2

You have just used the principle of superposition to interpret the relative ages of the layers. This principle states that in a sequence of undisturbed sedimentary layers or lava flows, the oldest layers are at the bottom.

Answer 3

Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's surface relative to each other, like slabs of ice on a lake.

Answer 4

In nuclear physics, nuclear fusion is a nuclear reaction in which two or more atomic nuclei collide at a very high speed and join to form a new type of atomic nucleus. During this process, matter is not conserved because some of the matter of the fusing nuclei is converted to photons (energy). Fusion is the process that powers active or "main sequence" stars.

Answer 5

I've described each one by order (a-b-c-d), now you can choose the true answer.