4.D
4.which unit of measurement is best to measure the amount of water in a swimming pool?
A.milliliter
B.kiloliter
C.centiliter
D.kilometer
The best unit of measurement to measure the amount of water in a swimming pool is B. Kiloliter.
To determine the best unit of measurement for the amount of water in a swimming pool, we need to consider the volume of water present. Volume is typically measured in liters and its multiples or submultiples. Let's consider the options given:
A. Milliliter (ml): This is one-thousandth of a liter. While milliliters are commonly used for measuring small quantities of liquid, such as medication or cooking ingredients, they are not practical for measuring the volume of a swimming pool. The volume of water in a pool would be in thousands or millions of liters, making milliliters too small of a unit.
B. Kiloliter (kL): This is equivalent to 1000 liters, which makes it a more suitable unit for measuring the volume of a swimming pool. Kiloliters are frequently used for large-scale measurements, such as in industrial or municipal water usage.
C. Centiliter (cL): This is one-hundredth of a liter and is generally used for measuring smaller quantities of liquid. Similar to milliliters, centiliters are not suitable for measuring the volume of a swimming pool, as the volume would be much larger.
D. Kilometer (km): Kilometers, on the other hand, are a unit of length and not volume. They are used to measure distances, such as the length of a road or the distance between two locations. Kilometers are not appropriate for measuring the volume of a swimming pool.
Therefore, the best unit of measurement for the amount of water in a swimming pool is B. Kiloliter (kL).
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http://www.merriam-webster.com/mw/table/metricsy.htm