5
QuizMultiple Choice

Separation of Mixtures

Question 5 • GA-GSE Grade 8 Physical Science

A company has a volume of contaminated water that needs to be separated through evaporation. What would allow the mixture to be separated in the shortest time?

Answer
A
placing the water in a single deep pool in a shady spot
B
placing the water in a single deep pool in a sunny spot
C
placing the water in several shallow pools in a shady spot
D
placing the water in several shallow pools in a sunny spot

Explanation

Evaporation happens faster when more water is exposed to the air and when the water is warmer. Several shallow pools expose more surface area than one deep pool, and a sunny spot heats the water. So several shallow pools in a sunny spot separate the mixture in the shortest time.

AI-written and checked against the verified answer.

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