Write down the names of these items found in the lab

 Rules for measurement: all units must : All measurements must have a unit  For example, yards or feet Be common  It must be measured in unit that people know like feet Be common to everyone  Places like Japan and Germany do not use our system of measurement, they use the metric system.

Sometimes you will notice a meniscus: a curving of the surface of the liquid. MeasurementToolUnit LengthMeter StickMeters Mass BalanceGrams VolumeGraduated CylinderLiters

 We have two systems for measuring: International System (used all over the world) ex. Meter, grams US Customary System (mainly used in America) ex. Foot, inch How do they compare? 1 inch = 2.54 cm 1 lb = 0.453kg feet = 1 meter 33.8 fl oz = 1 L oz = 1 gm 1 gal = 3.78 L

 SI unit for temp is Kelvin  The metric is Celcius  The English is Fahrenheit  We can convert Celcius to Fahrenheit and to Kelvin  212 degrees F = 100 degrees C = K This is the boiling point of water

 The Metric system or SI is based on units of 10. PrefixKilo (k) Hecto (h) Deka (da) Base Unit Deci (d)Centi ©Milli (m) AbbrevationKm kL kg Hm hL hg Dam daL dag Meter Liter gram Dm dL dg Cm cL cg mm mL mg Mulitplicati on Factor

 You multiply when changing from a larger unit to a smaller unit. And you divide when changing from a smaller unit to a larger unit.  For example: If you have a bowling ball with a mass of 4.54 kg. If you wanted to convert it to grams, you would have to move 3 spaces on the table to the right. Each space represents a multiplication of 10. So 10 X 10 X 10 = So, you multiply by kg X 1000 = 4540 g.

 A soda can has a volume of 355 mL and you want to convert it to dL. Move two places to the left, so 10 X 10= 100. You divide by mL/ 100= 3.55dL

 Accuracy: how correct a measurement is For example, if you measure a room as 16.7 feet but a blueprint of the room says it is 16.1, that would be inaccurate.  Precision: how small a scale is being used to make a measurement. For example a measurement made to the nearest 1/8 of an inch is more precise than a measurement that is rounded to the nearest inch  Estimate: a judgement