I. The earth is not spherical but elliptical in shape II. Variation in latitude and...

JAMB 2001

I. The earth is not spherical but elliptical in shape
II. Variation in latitude and longitude
III. Rotation of the earth on its axis
IV. Variation in the density of the earth

On which combination of the above does the weight of an object vary on the earth's surface?

A. I, II, III and IV
B. III and IV only
C. I, II and III only
D. I and II only

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Correct Answer: Option C

Explanation

The three main reasons why the weight of an object varies on the earth's surface is
- The shape of the earth
- Variation in Longitude and latitude
-Rotation of the earth

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