Metric Standards and Measurement Tools

Length Distance from one point to another Unit – meter (m) Tool – meterstick or metric ruler

Common Length Facts 1 inch = 2.54 cm 12 inches = 1 foot = 30.5 cm 1 meter ~ 39 inches or 39” Area = length x width

Mass The amount of matter in an object. Unit – gram (g) or kilogram (kg). Tool – balance (electronic or triple beam). 1KG is about 2.2 pounds.

Temperature Average kinetic energy of the particle in a material Unit – degrees Celcius (C) or Kelvins (K) Tool – thermometer

Force A push or a pull Weight is a force because it is the pull of gravity on a mass Unit – Newton –1 Newton is about ¼ pound Tool – spring scale

Volume the amount of SPACE an object occupies. Unit – liter or cubic centimeter (cm 3 ) 1 cm 3 = 1 ml Tool – graduated cylinder, overflow can or metric ruler

Volume of a Liquid Pour liquid into a graduated cylinder and take a direct measurement. The cylinder should be sitting on a flat surface. Read at eye level from the bottom of the meniscus. Units = mL.

Volume of a Regular Solid V = l w h for a rectangular solid  Tool = metric ruler.  Units = cm 3.

Volume of a small, Irregular Solid Place a known amount of water into the graduated cylinder. Lower the object in to the water Note the rise in water level. The rise in water level = the volume of the object. Units = mL.

Volume of a large, irregular solid Fill an overflow can to the top with water. Lower the object into the water Catch what overflows in a graduated cylinder. That’s the volume of the object! Units = mL.

Units for Volume 1 mL = 1 cm 3

Volume Determination Methods Review Which method should you use to correctly determine the volume of a cube? –Direct Measurement: L x W x H Which method should you use to correctly determine the volume of an irregular shaped object? –If the object is “large,” use a(n) ___. Overflow can –If the object is “small,” use a ___. Graduated cylinder

Metric Standard Review The metric standard for..  Volume of a liquid  liter  Weight  Newton  Mass is the  gram

The metric tool for... weight is the –spring scale mass is the –balance length is the –Meter stick or metric ruler