Praxis 5511 Practice Question
Instruments to measure wood block density?
Correct Answer: A
Rationale: To measure wood block density accurately, a balance (to weigh the block) and a ruler (to measure its dimensions) are essential tools. Density is calculated by dividing mass by volume, making these instruments ideal for the task.
Option B includes a thermometer, which measures temperature, and a cylinder, typically used for liquid volume, neither of which directly measure solid density.
Option C features a scale for weight but pairs it with a barometer, which measures atmospheric pressure, irrelevant for density measurement.
Option D combines an odometer, used for distance, and a meterstick, which can measure length but does not provide weight, making it unsuitable for density calculations.
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