1. Science Starter! Be seated before the bell rings, with desk clear of anything except your binder, pen/pencil, calculator and signed syllabus/lab safety contract.

2. Mathematics Review

3. Scientific Notation a.bc X 10 d ALWAYS in the same format! NEVER: ab.c X 10 d 0.abc X 10 d

4. Writing in Scientific Notation 143,000,000,000. Move decimal left or right until there is ONE digit in the one’s place. Count the spaces moved: 1.43000000000 [11 spaces] Write the number as a decimal, and use the number of spaces moved as the exponent [ Positive if the number is larger than 1, Negative if the number is a decimal ] 1.43 x10 11

5. Base Units VariableUnitAbbreviation Distancemeter m Timeseconds s Speed (Velocity) meters per second m/s Masskilogramkg

6. Prefixes Letters used to represent powers of 10: PrefixSymbolMultiplier nano -n10 -9 0.000000001 micro -μ10 -6 0.000001 milli -m10 -3 0.001 centi -c10 -2 0.01 kilo -k10 3 1,000 mega -M10 6 1,000,000

7. Example 980 nm 1.Identify the prefix and the unit “n”: nano“m”: meter 2.Scientific notation form: replace prefix with multiplier. 980 x 10 -9 m 3.Expanded form 0.000000980 m

8. Conversions Factor-Label Method tips: 1.Write the quantity you are given. 2.Next to your “given”, write the conversion factor as a fraction, with the same unit that is in the “given” on the bottom. 3. Multiply across the top and the bottom, then simplify.

9. Conversion Factors Metric - English 1 yard = 3 ft 1 ft = 12 in 1 mi = 5,280 ft 1 in = 2.54 cm 1 m = 3.281 ft Metric - Metric 1,000,000,000 nm = 1 m 1,000,000 μm = 1 m 1,000 mm = 1m 100 cm = 1 m 1,000 m = 1 km

10. Ex: How many centimeters are in 5.5 ft? (1) (2) (3)

11. Dimensional Analysis Ex. Convert 20 m/s to ft/min. 1)Write the “given” as a fraction: 2)Convert the distance to the right: 3)Convert the time to the left:

12. 4) Multiply across the top and bottom: 5) Simplify your answer: