1 chapter 1measurements 1.4 prefixes and equalities copyright © 2005 by pearson education, inc....
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1
Chapter 1 Measurements
1.4Prefixes and Equalities
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
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Indicate the unit that matches the description.
1. A mass that is 1000 times greater than 1 gram. 1) kilogram 2) milligram 3) megagram
2. A length that is 1/100 of 1 meter. 1) decimeter 2) centimeter 3) millimeter
3. A unit of time that is 1/1000 of a second. 1) nanosecond 2) microsecond 3) millisecond
Learning Check
4
Indicate the unit that matches the description.
1. A mass that is 1000 times greater than 1 gram.1) kilogram
2. A length that is 1/100 of 1 meter.2) centimeter
3. A unit of time that is 1/1000 of a second.3) millisecond
Solution
5
Select the unit you would use to measure A. your height.
1) millimeters 2) meters 3) kilometers
B. your mass. 1) milligrams 2) grams 3) kilograms
C. the distance between two cities. 1) millimeters 2) meters 3) kilometers
D. the width of an artery. 1) millimeters 2) meters 3) kilometers
Learning Check
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A. your height. 2) meters
B. your mass. 3) kilograms
C. the distance between two cities. 3) kilometers
D. the width of an artery. 1) millimeters
Solution
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An equality
• states the same measurement in two different units.• can be written using the relationships between two metric
units.
Example: 1 meter is the same as 100 cm and 1000 mm. 1 m = 100 cm
1 m = 1000 mm
Metric Equalities
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Measuring Mass
• Several equalities can be written for mass in the metric (SI) system
1 kg = 1000 g1 g = 1000 mg1 mg = 0.001 g1 mg = 1000 µg
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
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Indicate the unit that completes each of the followingequalities.
A. 1000 m = 1) 1 mm 2) 1 km 2) 1 dm
B. 0.001 g = 1) 1 mg 2) 1 kg 2) 1 dg
C. 0.1 s = 1) 1 ms 2) 1 cs 2) 1 ds
D. 0.01 m = 1) 1 mm 2) 1 cm 2) 1 dm
Learning Check
12
Indicate the unit that completes each of the followingequalities.
A. 2) 1000 m = 1 km
B. 1) 0.001 g = 1 mg
C. 3) 0.1 s = 1 ds
D. 2) 0.01 m = 1 cm
Solution
13
Complete each of the following equalities.
A. 1 kg = 1) 10 g 2) 100 g 3) 1000 g
B. 1 mm = 1) 0.001 m 2) 0.01 m 3) 0.1 m
Learning Check