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Chapter 2: Q7PE (page 82)

The North American and European continents are moving apart at a rate of about 3 cm/y. At this rate how long will it take them to drift500 km farther apart than they are at present?

Short Answer

Expert verified

16.6×106 years

Step by step solution

01

Given Data

  • Speed of the drift=3 cm/y=0.03×10−3 km/y.
  • Distance of the drift = 500 km.
02

Speed of the drift

Normally speed is directly proportional to the distance and is inversely proportional to the time taken to cover that distance.

It is a scalar quantity. Speed distance and time are interrelated to each other.

The time after they are 500 km apart can be calculated as:

Time=DistanceSpeed

Substituting the values in the above expression, we get:

T=500 km0.03×10−3 km/yT=16,666,666.66 y

Hence it will take them 16.6x106 yto be500 km apart from each other.

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