1. 3 branches of science

2. Life Science: study of living things and their relationship to one another and the environment.

3. Physical Science– study of matter and energy… Matter( chemistry) and energy is part of the physical science
3. Earth Science– study of Earth , its history , its changes, and its place in the universe.

4. Feynman –on beauty

5. Scientific method

6. Scientific method

7. 7 Steps to the Scientific Method
1) State the _______________)
purpose
2) Research it, and get _______________.
information
3) Form a Hypothesis.
( educated guess)
4) Perform an _____________________
experiment
5) Collect Data.
(Observations and Results)
6)Form your ____________________
conclusions_
7) the experiment.
Repeat

8. Every experiment must have a __________________and a _______________.
Control- part of experiment that stays the ________________
Variable- part of exp. being __________________
Independent V- causes a _____________in something
being tested. ( cause )
Dependent V – the part in the experiment that ___________( effect )
Theory--- A theory is the most logical explanation for something that happens in nature.
Law— A theory becomes a law when it is well accepted and well tested by the sc. Community.

10. Scientific theory and evidence

11. So here’s a question:
If two people travel the same distance, from A to B, at the same time, and one is walking, while the other is running, who will get “wetter” if it is raining?
How would you solve this problem using the Scientific Method?

12. Here’s the answer:

13. The metric system
Metric System-________________ system of measurement used by all scientists.
international
International system of units---SI ( system internationale)
Based on the ___________---It is a decimal system 10 13

14. The metric system
Metric System-________________ system of measurement used by all scientists.
International system of units---SI ( system internationale)
Based on the ___________---It is a decimal system

15. Metric system vs. Customary System

17. Measuring matter

18. Types of Measurement Unit Scientific Tools-instruments
Length-measures distance meter Metric ruler
Meter stick
__________________________________________________
Mass-amt. of matter kilogram Triple Beam
in an object Balance
 _________________________________________________
Temperature-measure Celsius( °C) Thermometer
of the total amount of kelvin (K)
kinetic energyin an obj. 18

19. Volume-amount of space Units tools
an object takes up (cm³) Graduated cylinder L over flow can
m.ruler/m.stick
*1 cc = 1 cm³ ; 1 cm3 = 1mL = 1 gram
___________________________________________
Volume of a regular solid (cm³ )(LxWxH) Meter Stick/ruler
ex: cube
Vol. of liquid mL, L Graduated cylinder ______________________________________________
Vol. of irregular
Solid ex: pencil cm³ , m³ Graduated cylinder overflow can 19

20. Density- relationship Units tools
between mass and volume overflow can D = m/v g/cm³ TBB, Gcylinder
___________________________g/mL________________________
Weight-gravitational
pull on an object-affected
by mass Newton spring scale 20

21. http://teachertube. com/viewVideo. php

22. K H D b d c m
PREFIX: KILO, HECTO, DEKA, (BASE UNIT), deci, centi, milli
Means: meter, liter, gram, 1/10th, 1/ 100th, 1/1000th
If you are going to left of base unit, move decimal to left. If you are going to right of base unit, move decimal to right # of places.

23. 10 m = ? Km
2 km = ? Cm
25.2 mL = ? L
2000 g = ? kg
kg = ? mg
cc = L

24. Answers: 1. 10 m = ___________km .01 km 2. 2 km = _________cm
mL = _______ L
. 250 L
g = _______ kg
2 kg
kg = _______ mg mg
cc = _______L
1.5 L
NOW LET’S DO THE CONVERSIONS ON “METRIC MANIA!”

25. Conversions
55 kg. to grams
32 km to centimeters
921 mL to Liters
.7grams to milligrams
1500 grams to Kilograms
108 mL to Liters
110 Liters to mL
1000 centimeters to Kilometers
1 mL to cc’s
4 mL to cc’s
4 mL to cm
16,000 mm to meters
16,000 meters to centimeters

26. How would you get the volume of a cylinder?

27. All # must be between # 1 and 10.
Scientific Notation
To reduce the number of zeros in very big and very small numbers, you can express the values as simple numbers multiplied by a power of 10.
All # must be between # 1 and 10.
scientific notation.
103 = 1,000
102 = 100
101 = 10
100 = 1
10-1 = 0.1
10-2 = 0.01
10-3 = 0.001

28. The speed of light is about 300,000,000 m/s
In scientific notation the speed of light is 3.0 x 108
On your own:
Write the following measurements in scientific notation.
a. 800,000,000 m b kg
Write the following measurements in long form.
a x 103 g b x 10-8 cm