Question

1. students in a science class at crestdale middle school bring in tap water samples to examine for turbidity.

turbidity is a measurement of the number of particles in water and how cloudy the water appears.
these particles can be inorganic matter (sand and silt) or organic matter (microorganisms or decomposed leaves).
the safest water has the lowest turbidity and appears clear.
four of these samples are shown below.
four tap water samples
which of the samples appears to have the highest turbidity and may not be safe to drink?
sample 1
sample 2
sample 3
sample 4
clear all

Explanation:

Turbidity measures cloudiness from particles; higher turbidity means cloudier, less safe water. By observing the samples, Sample 1 is the cloudiest, so it has the highest turbidity.

Answer:

Sample 1