Multiple choice general knowledge science & technology

As you move towards the centre of earth, gravity changes. When you reach the exact centre, the gravity will:

  1. Be Maximum

  2. Be Zero

  3. Be Same as Surface

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At Earth's exact center, gravity becomes zero because you're equally surrounded by mass in all directions. The gravitational pull from all sides cancels out completely. Gravity increases slightly as you go down from surface to the mantle, then decreases toward zero at the center.

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