The Standard Measurement System

Standard Measurement System (SI) Universal METRIC system used to measure length, volume, mass, density, temperature, & time Based on multiples of 10

Length SI Unit of length is the Meter (m) Measures length & distance Using the metric ruler on your desk… Measure the object in front of you in centimeters. What is the measurement in millimeters? One centimeter is divided into how many millimeters?

Weight vs. Mass Weight is the measure of the force of gravity on you SI Unit of weight is Newtons (N) Mass is the measure of amount of matter (stuff) an object contains. Scientists prefer to measure matter by its mass rather than weight

Mass Unit of Mass in SI Units is Gram (g) or Kilogram (kg) A triple-beam balance measures mass in grams

Using a Triple Beam Balance… Check to see that the Pointer is pointing to zero.  If it is not, check to see that all the Riders are all the way to the left at the Zero mark. Adjust the balance by turning the Adjustment  Screw slowly until it points to zero A. The farthest (biggest) beam reads only in 100 g increments. B. The middle beam reads only in 10 g increments. The weights in each of these must always sit in a "notch". They cannot be placed at arbitrary points on the beam. C. The small beam on the front can be placed to read continuously from 0 to 10 grams. Measure the object in front of you in grams to the nearest 10th

Volume SI Unit of Volume is the Liter (L) Measures how much space an object takes up Commonly express volumes in liters, milliliters, or cubic centimeters Graduated cylinders measure liquid volumes Meniscus: When the top surface of the liquid is curved…measure at the bottom of the meniscus

VOLUME of Rectangular Solids and Irregular Solids Volume = Length x Width x Height Irregular Solids: Submerge the object in a graduated cylinder

(kg/m3) or (g/cm3) or (g/mL) Density Density is Mass per unit Volume. Two objects can have the same volume, but very different densities. Density = Mass / Volume (kg/m3) or (g/cm3) or (g/mL) Numerator is a measure of mass, and the denominator is a measure of volume

Brain Break! Turn to Textbook page 24. With your partner, solve the Math Sample Problem questions #1-2

Temperature SI unit of temperature is Celsius (C) on the Celsius Scale. Water freezes at 0 degrees C and boils at 100 degrees C SI unit of temperature is also the Kelvin (K) on the Kelvin Scale