find when the rift between The North American and European plates

The North American and European plates of the Earth’s crust are drifting apart with a relative speed of about 25 mm/yr. Take the speed as constant and find when the rift between them started to open, to reach a current width of 2.9 x10^3 mi.

Expert Solution

The plates spread apart distance d of 2.9 × 103 mi in the time interval Δt at the rate of 25 mm/year. Converting units:

Step 1: Convert miles to millimeters

-1 mile=1609 millimeters

1m=1000mm

1mi=16091000mm

2.9x10^3 mi=4.7 x 10^9 mm

Step 2: Formula of Speed= Distance over time

Distance=(4.7x10^9)mm

Time= 25 mm\yr

SO; (4.7 x 10^9) mm : (25 mm\yr)

=1.9x10^8 years.

1.9x10^8 years

The plates spread apart distance d of 2.9 × 103 mi in the time interval Δt at the rate of 25 mm/year.

Narmin answered 3 years ago

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