alleryStart learning →Which method separates pebbles from sand most quickly?
ADistilling
BSieving
CFiltering
DDissolving
Answer & Solution
Correct answer: B. Sieving
1. Pebbles and sand grains are both solid but they differ greatly in size.
2. A sieve has openings that let the small grains fall through.
3. The larger pebbles cannot pass and stay behind on the mesh.
4. Sieving is therefore the right method when the parts differ in size.
_Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Sieving_
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