1. WARM UP You will need a calculator today. If you don’t have one pick one up from the front lab tables! In your lab notebook (or on a piece of paper) write the date, then answer the following questions: 1. Where should you dispose of broken glass? 2. What are the three steps to using a fire extinguisher? 3. When should you wear goggles?

2. BASIC NUMBERS & MEASUREMENT…

3. WHAT HAS PHYSICS DONE FOR ME

4. UNITS OF MEASUREMENT Physics Basic Units  All Formulas that are measuring or using these variables will need to have the measurements in the following units.  Distance = Meter (m) (~39”)  Mass = Kilogram (kg) (~2.25#)  Time = Seconds (s)  You may not be given the variable in this unit, so you may have to convert them.

5. POWERS OF 10

6. METRIC PREFIXES … SymbolPrefixAmount Kkilo 10 3 Hhecto 10 2 dadeka 10 1 Meter, Liter, Gram Base Unit 1 ddeci 10 -1 ccenti 10 -2 mmilli 10 -3

7. METRIC PREFIXES … KhdaBasedcm kilohectodeka meter, liter, gram decicentimilli 10 3 10 2 10 1 110 -1 10 -2 10 -3

8. SCIENTIFIC NOTATION Is a way of expressing a very LARGE number or a very small number in units of 10. ExamplesScientific Notation 1564789321.56 x 10 8.00876238.76 x 10 -3 1348700.1.35 x 10 6.00000000055.0 x 10 -10 If the number is > than 1 the exponent will be positive (+), if the number is < than 1 the exponent will be negative (-)

9. EXAMPLES (WRITE THESE DOWN) Number Scientific Notation 153768.4.0067894.00000000000579 486 16987345688.0378

10. EXAMPLES (WRITE THESE DOWN) Scientific Notation Number 1.74 x 10 4 8.93 x 10 -5 3.67 x 10 2 6.84 x 10 -8 5.68 x 10 6

11. “MEASUREMENT: PRACTICE, DIRECT VS. INDIRECT MEASUREMENT” Station Item Type of measurement DAY 1 Indirect DAY 2 Direct 1 Mass kg 2 Volume L 3 Length M 4 Mass kg 5 Volume L 6 Length m 7 Volume L 8 Mass kg 9 Length m 10 Length m Directions: 1.Copy the data table on the right into your lab notebook. 2.After copying the data table you may go to any open station. Read the card on what you are to measure. 3.Make an indirect, estimated, measurement of the item. 4.Record your indirect, estimated, measurement, remember to include (metric!)units. A.Meter, Liter, Kilogram 5.Repeat this process for each of the lab stations. Kg ~ 2.25 pounds M ~ 39 “ L ~ 1 quart Write for title & date