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So that we understand the value of the measurement number. A value of 5 does not tell you if it refering to distance, volume, or mass. If it is a distance whether it is about 5 feet, 5 inches, 5 miles, or 5 centimetes, 5 meters, 5 kilometers or anythinge else.
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All measurements must consist of?
a unit of measurement along with the number
What measurement must you make to find density of a sample of matter?
Two measurements are needed - you must find its mass and its volume. Density is mass divided by volume.
What does it mean to say that a scientific question must be supportable?
The answer to the test must include physical evidence.
Best unit to measure a teardrop?
Teardrops can vary widely in volume, but if you must know , collect the teardrop in a med cup , draw it up into an insulin or tuberculin syringe and convert the measurement of minims or cc's , into the desired measurement .
How can the number of significant figures in a measurement be increased without changing the measuring device?
There are at least a couple of ways. Each may not be appropriate in all circumstances.Read the measurement from markings between those that are numbered. For example, most rulers have numbered centimetres but the markings are at millimetres.If there are a number of identical items, then measure then together and take their average. For example, if you have ten identical coins, then the measure their combined mass and divide the answer by 10. That average will have one more sig fig. But the items MUST be identical.
A measurement must include both a number and what?
The unit of measurement
A measurement must include both a number and a(an)?
the unit of mesurement
A measurement must include both a number and a?
the unit of mesurement
What must the axes on a graph include?
Units of measurement, Titles.
What must the scale of a graph include?
Intervals and units of measurement
What two things must a measurement have?
a number and a unit
All measurements must consist of?
a unit of measurement along with the number
When a scientist is making a measurement what information must be included with the number?
The measurement units and the degree of precision (significant figures or margin of error).
A neutral with 15 protons must include what else?
15 Electrons. A charge-less (neutral) atom must have an equal number of both protons and electrons, otherwise it becomes an ion.
Why should probability always include a number?
Probability is a numerical value and there must bea number, not just include one.
Would you include zero in finding the mean of a number?
Yes, you MUST.
Why must you include both the grams and centimeters cubed in the answer of a density problem?
Density is mass/Volume so you must include the units of measurement. For mass, these may be grams or kilograms (or, in countries still using the Imperial system, pounds!). Similarly there are measures for volume. If these were not given it would not be possible to tell whether the density was given in grams per cm3 or pounds per cubic foot.
