Disc1 - Population Growth

# Disc1 - Population Growth - Name Section Discussion 1 Math...

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Name _________________________ Section ________________________ Discussion 1: Math Concepts and Population Growth January 31, 2011 The purpose of this exercise is to become familiar with some of the quantitative methods used to express data involved in environmental issues and then apply these methods to examining the number one environmental problem…population growth. I. Math Concepts A. The Metric System The metric system is a measuring system based on powers of ten. Some useful conversions between the English and metric systems are in the table below. Gallons/Liters 1 Gallon = 3.8 Liters 1 Liter = 0.264 Gallons Feet/Meters 1 Foot = 0.3048 Meters 1 Meter = 3.2808 Feet Pounds/Kilograms 1 Pound = 0.454 Kilograms 1 Kilogram = 2.2 Pounds Miles/Kilometers 1 Mile = 1.609 Kilometers 1 Kilometer = 0.621 Miles To make a conversion between the systems, you simply multiply your value by the conversion factor. Note that the units you are converting from will cancel, and that using either conversion listed above will give you the same answer. For example, to convert 50 feet into meters: meters foot meters x feet 24 . 15 1 3048 . 0 50 -OR- meters feet meter x feet 24 . 15 2808 . 3 1 50 Using this information, answer the questions below. Be sure to show all your work . ************************************************************************************* (1) Company X is currently dumping 189 Liters of liquid waste into the local river each month. The legal limit is 20 gallons per month. How much does Company X need to reduce its emissions in terms of both liters and gallons to meet the standards? To convert within the metric system itself, you must know the following: 1

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For distance, the fundamental unit is the meter (m), where… 1000 meters (m) = 1 kilometer (km) 100 centimeters (cm) = 1 meter (m) 1000 millimeters (mm) = 1 meter (m)
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• Spring '11
• Centorbi
• Geology, International System of Units, SI prefix, Kilogram, Litre

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