Brain Teasers
The Rock in the Bucket
A pumice rock (from a volcano) is placed in a bucket. Will it go to the bottom or will it stay at the top?
Hint
Pumice is a rock that is less dense than water, but...Answer
Go to the bottom.Since I did not say there was water or anything else in the bucket, it will fall to the bottom because the rock is more dense than air. Even though most people know that pumice is less dense than water, so it floats on water.
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