Multiple choice general knowledge science & technology

Consider a boat loaded with scrap iron in a swimming pool. If the iron is thrown overboard into the pool, will the water level at the edge of the pool rise, fall, or remain unchanged?

  1. fall

  2. rise

  3. remain same

  4. impossible to tell
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When iron is in the boat, it displaces water equal to its weight. When submerged, it displaces water equal to its volume. Since iron is denser than water, its volume is less than the volume of water with the same weight, so less water is displaced overall.

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