MEASUREMENT. Chapter One: Measurement. 1.1 Measurements 1.2 Time and Distance 1.3 Converting Measurements 1.4 Working with Measurements. Section 1.1 Learning Goals. Define measurement. Compare English and SI measurements. Become familiar with metric prefixes. Key Question:
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A measurement has two parts:
a number value and
a unit1.1 Measurements
What is the length in cm?
How many seconds is this time interval?
In 1791, a meter was defined as one ten-millionth of the distance from the North Pole to the equator.
What standard is used today?
655 mm = .655 meters
Convert 142 km to m
Convert 754,000 cm to km
Convert 4.5 ft to cm
Find the length of the
object in centimeters.
How many digits does your answer have?
Digits that are always significant:
Digits that are never significant:
What is area of 8.5 in. x 11.0 in. paper?
# Sig. fig = 94 in2
Is there a significant difference in data?