Question

question 18 of 25
which method of measurement is most likely to be both accurate and precise?
a. measuring the temperature difference between two objects by comparing how they feel
b. measuring time using a clock that has slowed down
c. measuring the speed of a runner by comparing it to that of other runners
d. measuring the temperature of a pond using a digital thermometer

Explanation:

Accuracy refers to how close a measurement is to the true - value, and precision refers to how close repeated measurements are to each other. Measuring temperature by feeling is subjective and inaccurate. A clock that has slowed down gives inaccurate time measurements. Comparing a runner's speed to others is relative and not a precise or accurate way of measuring speed. A digital thermometer is a calibrated instrument that can give both accurate (close to the true temperature) and precise (reproducible) measurements of the pond's temperature.

Answer:

D. Measuring the temperature of a pond using a digital thermometer