210 likes | 294 Views
Using Numbers in Science AND Metric System. Scientific Measurements. Made in metric units Referred to as the International System or SI units Based on the decimal system Related by powers of 10 Each type has a base unit
E N D
Scientific Measurements • Made in metric units • Referred to as the International System or SI units • Based on the decimal system • Related by powers of 10 • Each type has a base unit • Use prefixes to refer to a unit larger or smaller than the base by some power of 10
SI (International System) units Centigrade or Celsius = ºC This is the unit we will use in lab for temperatures!
Prefixes for Metric Units <1 deci (d) = 1/10 = 0.1 centi (c) = 1/100 = 0.01 milli (m) = 1/1000 = 0.001 decimilli (dm) 10-4 centimilli (cm) 10-5 micro (µ)10-6 = 1/100000 = 0.000001
Prefixes for Metric Units >1 deka (da) = 10 hecto (h) = 100 kilo (k) = 1000
Comparison Ideas equals equals
Review Questions 1. What does the prefix "milli" mean? • millionth • thousandth • hundredth • A liter is a little more than a _______ • pound • gallon • quart
3. What is a good height for a basketball player? A. 6 meters B. 2 meters C. 6 millimeters 4. Which is the longer distance to run ? • 50 meters • 50 kilometers • 50 miles
5. Which value would be right for the mass of a A. 17 mg B. 17 g C. 17 kg 6. Which value would be right for the mass of a A. 460 mg B. 460 g C. 460 kg