1. Science Skills
Ch 1 Notes

2. What is Physical Science?
Four main components of Physical Science?
Space and Time
Matter and Change
Forces and Motion
Energy

3. Scientific Notation Why? 1,200,000,000 = 1.2 x 109
Makes very large and very small numbers easy to work with.
1,200,000,000 = 1.2 x 109
= 1.2 x 10-9

4. Scientific Notation Multiplying Example Multiply the first numbers
Add exponents
Example
3.0 x 108 x 5.0 x 102 =

5. Scientific Notation Dividing Example Divide the first numbers
Subtract the exponents
Example
1.5 x 1011 / 3.0 x =

6. Units Units! Units! Units!
Units are incredibly important. They give you a frame of reference for your measurements.
10 What??
Donuts?
Pennies?
Meters?
Kilometers?
SI Base Units
Quantity
Unit
Symbol
Length
meter m
Mass
kilogram kg
Temp
kelvin K
Time
second s

7. kilograms per cubic meter
Units
Base units are measured.
Derived units are calculated
Area: m x m = m2
What is the volume of a box where length is 3 m, width is 4 m, and depth is 2 m?
SI Derived Units
Quantity
Unit
Symbol
Area
square meter m2
Volume
cubic meter m3
Density
kilograms per cubic meter
kg/m3

8. Metric Prefixes Prefix Symbol Meaning Multiply by… giga- G
billion (109)
1,000,000,000
mega- M
million (106)
1,000,000
kilo- k
thousand (103)
1,000
deci- d
tenth (10-1)
0.1
centi- c
hundredth (10-2)
0.01
milli- m
thousandth (10-3)
0.001
micro-
millionth (10-6)
nano- n
billionth (10-9)

9. Metric Prefixes How many km in 215,000 m? How many g in 3.9 kg?
How many nanoseconds in 1 megasecond?

10. Temperature Celcius – Used the most in sience Celcius to Kelvin
Subtract 273 and drop “degree” symbol
Ex: 112C = _______ K
Celcius to Farenheit
 F = 9/5( C) 
Farenheit to Celcius
 C = 5/9(F – 32.0)

11. Practice
Pg #16-18, 20, 25, 28,