Density
1 mark · EasyWhich of the following changes will decrease the density of a block of wood?
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Correct option: Increase its mass and volume by the same proportion
Common mistakes: Decrease its mass only; Decrease its volume only, mass unchanged
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Marking points
B1 · 1 mark · Correct option selected.
Worked solution
If mass and volume are both increased in the same proportion, the ratio becomes smaller, so density decreases.