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1. If the distance between Rio de Janeiro and Casablanca is 7500 km, and rifting

ID: 121097 • Letter: 1

Question

1.

If the distance between Rio de Janeiro and Casablanca is 7500 km, and rifting began about 150 million years ago, what is the average annual rate that these continents moved apart (in cm/year). Hints: 100cm = 1m; 1000m = 1km

0.00005 cm/year

5 cm/year

50 cm/year

5,000,000 cm/year

2.

Which equation shows how you can estimate the time (T) it takes you to drive a distance (D) if you drive at an average of velocity (Vcar)?

0.00005 cm/year

5 cm/year

50 cm/year

5,000,000 cm/year

2.

Which equation shows how you can estimate the time (T) it takes you to drive a distance (D) if you drive at an average of velocity (Vcar)?

Explanation / Answer

1. Distance between 2 cities = 7500 km

Number of Years = 150,000000

Drift per year = 750000000/150000000 = 5 cm/year

2. (c) Sice we know that Distance= speed x time, therefore T = D/V