Physical Science Review Questions: Chapter 3 Measurements

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The maximum density of pure water is

1.00 g/mL

The prefix Milli stands for __________ times the base unit

1/1000

The prefix kilo indicates that the metric base unit is multiplied by the factor

1000

Which of the following conversion factors can be used to determine if two measurements, 2 meters and 200 centimeters, are equal length?

100cm=1m

What represents a measurement estimated to the ones place?

1100.

Which of the following conversion factors would be helpful and converting kilometers to millimeters?

1m=1000mm, 1km=1000m

How many milliliters are there in a 2 L soft drink bottle?

2000

Four instruments give the following masses for the same object. It's actual mass is 3.45 g. Which instrument is the most accurate?

3.4512 g

What is not an example of qualitative data?

30.5 mL

Four instruments give the following masses for the same object. It's actual mass is 3.45 g. Which instrument is the most precise?

4.91363 g

The curved upper surface of liquid is called

A meniscus

Measured data always has two parts. It must have

A number and a unit

What must be known in order to determine the accuracy of a measurement?

Accepted value

Scientist try to eliminate measurement errors by

Averaging several measurements of the same quantity

A ___________ Is any factor equal to one but consist of a ratio two units

Conversion factor

Which of the following types of numbers do significant digits not apply to?

Counted, pure, fractions, pi

Which of the following measurements is the SI derived unit volume?

Cubic meter

The water displacement method is best used for

Determining the volume of a small, irregular shaped object

Scientists call measurable properties of matter and energy

Dimensions

The purpose of observing significant digits is to

Establish the precision of the measurement not improve its accuracy

What is not an example of quantitative data?

Highly reactive

Particles of matter are spread out as the matter's temperature increases. Keeping this in mind, what general effect does temperature have on density?

Increasing the temperature decreases the density

An __________ is any artificial device made for the purpose of refining, extending, or substituting for the human senses when measuring

Instrument

The accuracy of a measurement

Is an assessment of the measurement error

Inertia

Is the tendency of matter to continue moving in a straight line

What is an original standard that is still used today?

Kilogram

Be original metric system created in France in 1799 included which of the following standard units?

Kilogram, meter

What measurement a matter usually requires gravity, but the amount of gravity does not affect the results?

Mass

Significant digits apply only to

Measured data

Which of the following are equal volumetric units

Milliliter and cubic centimeter

Metric prefixes allow units larger or smaller than the SI base unit to be converted to other units by

Multiplying the base unit by a power of 10

the SI unit of weight is

Newton

What is not a source of error in data?

Object measured

Data that is added or subtracted must have the same

Precision

Which type of data is less likely to be misinterpreted due to observational bias?

Quantitative data

In 1960 the countries of the world agree to adopt what single global measurement system?

SI

A ___________________ is a known quantity that everyone agrees will be used for comparison when measuring.

Standard

A measurement is a comparison of a dimension of an object to an appropriate

Standard

Which of the following reasons explain why measurements can never be exact?

The instrument markings may not be in small enough increments to align exactly with the measurement, the observer may use or read the instrument incorrectly, the instrument may have manufacturing defects, the conditions of measuring may interfere with obtaining a good measurement

This segment of the dimension assigned a value of one for measurement purposes is called a

Unit

The space enclosed or occupied by an object is its

Volume

A spring scaled is used for measuring

Weight

Which of the following measurements of matter is affected by the amount of gravity?

Weight

What is a unit of matter

kg

The SI unit of mass is

kilogram

What is not a reason we measure things?

to find answers to all our questions


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