The African and South American Continents Are Separating at a Rate

question 98

Multiple Choice

The African and South American continents are separating at a rate of about 3 cm per year, according to the ideas of plate tectonics. If they are now 5000 km apart and have moved at a constant speed over this time, how long is it since they were in contact?

• A) 1.7 million years
• B) 170 million years
• C) 170 thousand years
• D) 1.7 billion years

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