This document discusses different types of measurements used in the physical world including length, mass, time, and volume. It provides examples of standard units for each type of measurement in both English and SI (metric) systems, as well as common instruments used for measuring. Some advantages of using the SI system are also mentioned.

1. Measurement
Assigning numbers to the physical
world.

2. How far is it to my next class?
• What are we measuring?
• LENGTH
• English: inch, foot, yard, mile
• SI Unit: Meter (m)
• Instruments: ruler, meter stick, measuring
tape

3. How much does a car weigh?
• MASS: amount of matter in an object. Said
again, it’s how much “stuff” something has.
• English units (WRONG!): ounce, pound, ton
• SI Unit: kilogram (kg)
• Instruments: scale, balance
• What is the difference of mass and weight?

4. How long is a commercial on TV?
• What are we measuring?
• TIME
• SI Unit: second (s)
• Are there other ways to measure time?
• Instruments: stopwatch, chronometer,
hourglass, sundial

5. How much soda is in a can?
• What are we measuring?
• VOLUME
• English (WRONG IN THIS CLASS): ounces,
quart, cups, gallon
• SI Unit: Liter
• Instruments: Graduated cylinder (liquids) ,
beaker (liquids), and rulers (solids)

6. What is an advantage to using SI
units?

7. Metric Mneumonics
• King Henry Doesn’t Usually Drink Chocolate
Milk
• Kilo, Hecto, Deka, UNIT, deci, centi, milli

8. How do I convert?
• Example: A mosquito has a mass of 10 mg.
What is this mass in kilograms?
• I live 5.4 kilometers from school. How far is
that in meters?