The Standard Unit of Length, the Meter, Is Now Defined

question 24

Multiple Choice

The standard unit of length, the meter, is now defined with reference to

• A) a meridian on the Earth.
• B) the French meter.
• C) the speed of light.
• D) a platinum-iridium bar.
• E) a member of the royal family.

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Definitions:

Control Group

In an experiment, the group that does not receive the treatment or intervention being tested, serving as a comparison to evaluate the effect of the treatment.

Study Guide

A comprehensive resource created to assist students in understanding and memorizing relevant information for a particular course or subject.

Experimental Group

The group in an experiment that receives the treatment or condition being tested, as opposed to the control group which does not.

Random Assignment

A method used in experiments to distribute participants randomly across different groups to ensure unbiased results.