The correct answer is - Seafloor spreading at the mid-ocean ridge provides the mechanism for tectonic plate movement.
Harry Hess is one of the people that is most important when it comes to the proving and world wide acceptance of the continental drift theory.
Hess was very interested in the topic, and he was constantly looking for clues that would bring light to it and finally have a definite proof of it. While sailing through the Atlantic and doing some examinations, Hess noticed that there high mountains in the water, having flat peaks, and being arranged in an interesting manner. These underwater mountains, named guyouts, were the highest at a certain point, and than on both sides, as the distance was increasing they were becoming smaller and smaller.
What Hess stumbled upon was the seafloor spreading and how it works, and he recognized that quickly. He immediately went on to share what he discovered, that there's magma coming from bellow, solidifying and spreading, thus creating new crust while pushing the old crust away from the center, which is the reason why the continents are moving.
Incomplete question. The Options read;
a) Is about one-hundred-million years old.
b) Is 4.6 billion years old.
c) Has been here forever.
d) Is less than about one-hundred-million years old.
e) Is more than about one-hundred-million years old.
Answer:
e) Is more than about one-hundred-million years old.
Explanation:
<em>Remember, </em>we are talking about the information available some two to three hundred years ago when there was no modern geological equipment for radioactive elements tracing.
Hence, using uniformitarian calculations from the thickness of known sedimentary rocks, <u>the geologists concluded that the Earth must be more than about one-hundred-million years old.</u> However, modern researchers today have concluded the Earth to be <u>not </u>millions but billions of years old.
The approximate distance between the two cities along the roman roads choosing the route that passes by arelate would be <span>10,817 km</span>. Hope this answers the question. Have a nice day. Feel free to ask more questions.
