Pacific Ocean, convergent; Atlantic Ocean, divergent
The present is the key to the past.
Explanation:
Question 1
The plate boundaries that can be inferred from the shrinking Pacific and expanding Atlantic ocean are convergent and divergent respectively.
The pacific ocean is made up of a convergent margin.
The Atlantic is a divergent margin.
- A convergent margin is a destructive margin where two plates comes in contact with one another.
- A divergent margin is a constructive margin where two plates are moving away and allowing new materials to come up to the surface.
This is why the Pacific ocean is shrinking and the Atlantic is expanding
learn more:
Sea floor spreading brainly.com/question/9912731
Descending lithosphere brainly.com/question/9582362
Question 2
The principle of Uniformatrianism tells us that the present is the key to the past.
It was proposed by Sir James Hutton, a Scottish Geologist in the around the Scotland mountains.
Although the principle is now refined to the principle of Actualism, it still holds a lot of fundamental weight in solving geological problems.
- It states that "the present is the key to the past and all geologic process that are happening today have occurred in the times past".
- This principle helped revolutionizing the perception about geologic events.
- Before his theory, the principle of catastrophism was in play.
- The school of though of this principle is that all events occurred rapidly and catastrophically like a volcanic eruption.
learn more:
Sedimentary rocks brainly.com/question/9131992
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