MEASUREMENT & SCIENTIFIC TOOLS The International System Of Units • The International System of Units (SI Units)- the internationally accepted system for measurement. • They.
Download ReportTranscript MEASUREMENT & SCIENTIFIC TOOLS The International System Of Units • The International System of Units (SI Units)- the internationally accepted system for measurement. • They.
MEASUREMENT & SCIENTIFIC TOOLS The International System Of Units • The International System of Units (SI Units)- the internationally accepted system for measurement. • They use a standard of measurement called base units and a set of prefixes to tell the size of the unit. • Easy to convert one SI unit to another because SI is based on units of ten Common SI Units & Conversions Meter (m)- the basic SI unit for length(distance) Grams (g)- The basic SI unit for mass. • Mass is a measure of the amount of matter in an object Volume- the amount of space matter occupies. • Solids – cubic meters (m3) • Liquids- liters (l) Temperature-measure of how hot or cold something is. measure in: • Celsius(C) • Kelvin (K) Kittens Hate Dogs Because Dogs Can't Meow KILO HEKTA DEKA BASE DECI CENTI MILLI .005 km .05 hkm .5 dkm 5m 50 dg 500 cm 5,000 mm 7cm 20 ml 15g 30 km Kittens Hate Dogs Because Dogs Can't Meow KILO HEKTA DEKA BASE DECI CENTI MILLI .005 km .05 hkm .5 dkm 5m 50 dg 500 cm 5,000 mm .07m .02 l .7dm .2 dl 7 cm 2cl 70 mm 20 ml 15g 150dg 1,500 cg 15,000 mg .00007 .00002 .0007 .007 dkm .0002 .002 dkl .015 .15 1.5 30 km 300 3,000 30,000 300,000 30,000,000 300,000,000 Significant Figures • The # of digits in a measurement that you know with a certain degree of reliability. • Limit to 2 significant figures after the decimal. Ex: • 127.654321 = 127.65 • 56.28765 = 56.29 Scientific Tools Tool- anything that helps you do a task. Measuring Lengths & Distances (m): • Rulers • Meter sticks • tape measure Measuring Volume of a liquid (l): • Graduated cylinders • Beakers • Flasks • Test tubes Measuring Mass of an object (grams-g) Triple beam balance Measuring Temperature ( Celsius or Kelvin) Thermometer Measuring time ( seconds(s), min (m)): stopwatch Safety Tools: • Goggles • Lab coats • Gloves • tongs • Tweezers Analyzing Tools: • Pencil/pens • Log book • Computers • Calculator • Camera Other Tools: • Eye droppers • Microscope • Magnifying glass • Hot plates • Trays • Scalpels • Glass stirrer • Mortar and pestle • Binoculars • compass