Measurement
Standards of Measurement Standard- an exact quantity (amount) people agree to use for comparison. Measurements must have a number and a unit. Scientists, and the rest of the world use the SI system of measurement. (Based on multiples of 10) In the USA we use the English System of measurement.
What do we Measure? Length- the distance between two pts. Mass - the amt. of matter in an object. Volume- the amt. of space something occupies. Density- the amt. of particles packed into a space. Temperature- the amt. of energy in an object. Time- how long it takes for something to happen.
Tools we Use for Measuring Length- metric ruler Mass- triple beam balance Volume- graduated cylinder Density- triple beam balance and graduated cylinder, Temperature- thermometer Time- clock
Standard Units of Measurement Length- meter Mass- grams Volume- ml, cm3 Density- g/ml, or g/cm3 Temperature- Celsius, or centigrade (degrees) Time- seconds