Given:
3,500 kilometers
Find:
Years for two continents to collide = ?
Solution:
We know that typical motions of one plate relative to another are 1 centimeter per year.
So first, we convert 3,500 km to cm.
The solution would be like this for this specific problem:
1 km = 100,000 cm
3,500 km x 100,000 = 350,000,000 cm
Since we know that 1 cm = 1 year, then that means 350,000,000 cm is equivalent to 350,000,000 years.
Therefore, it would take 350 million years for two continents that are 3500 kilometers apart to collide.
To add, a phenomenon of the plate tectonics of Earth that occurs at convergent boundaries is called the continental collision.