1. Physical Science Lesson 1 Mr. Conkey
Science Background
Physical Science Lesson 1
Mr. Conkey

2. What is Science?
Take 5 minutes with your shoulder partners and come up with a definition for science.

3. Science – A system of knowledge and the methods used to find that knowledge.
Curiosity leads to discovery

4. What is technology?
Again, take a few minutes to come up with a definition for technology with your shoulder partners.

5. Technology – the use of knowledge to solve practical problems.
Science and Technology are interdependent, meaning that as one advances the other does too.
Example: Studies in Physics led to transistors which led to advances in space and computer sciences.

6. What is chemistry? What is physics?
Come up with the definitions for Chemistry and Physics with shoulder partners.

7. Chemistry – The study of the composition, structure, Properties, and reactions of Matter Physics – The study of Matter and Energy and the interactions between the two through forces and motion.

8. Fill in the Blanks with your partner.
Observation
a._________
b._________
Scientific Methods
d._________
c._________

9. The Scientific Methods
Observation
a. Hypothesis
b. Testing
Scientific Methods
d. Theory
c. Conclusion

10. Borrowed from:

11. Scientific Notation
A way of expressing a value as the product of a number between 1 and 10 and a power of 10.
Example 1: 300,000,000 can be written as 3.0 X 10 ⁸
Question: What is the exponent in example 1?
Example 2: is written as 8.6 X 10 ⁻ ⁴
When value is greater than 10 the exponent is always positive. When the value is less than 1, the exponent is always negative. Practice!

12. Lets Practice Scientific notation (S.N.)!
Convert these to S.N.
10,000,000
245,368
5.4327
Now lets convert these back to standard notation.
1.3 X 10 ²
2.538 X 10 ¯⁴
X 10 ¹²
4.311 X 10 ¯⁷
X 10 ³
3.545 X 10 ¯²

13. Solving Multiplication and Division problems using Scientific notation
When multiplying numbers in S.N., you multiply the two numbers Before the multiplication sign and then Add the exponents together.
Example: Calculate how far light travels in 500 seconds by multiplying the speed of light by how many seconds.
(3.0 X 10 ⁸ m/s)  speed of light X (5.0 X 10 ² s)  500 seconds in S.N.
(3.0 X 5.0) (10 ⁸ ⁺ ²) (m/s X s) = 15 X 10 ¹⁰ = 1.5 X 10 ¹¹

14. Solving Multiplication and Division problems using Scientific notation (Cont.)
When dividing numbers in S.N., you divide the numbers before the power of ten and then subtract the exponents.
Example: Calculate how long it takes for sunlight to reach Earth.
1.5 X 10 ¹¹ m  distance from the Sun to the Earth
3.0 X 10 ⁸ m/s  speed of light
1.5
X ¹¹¯⁸ s = X 10 ³ s = 5.0 X 10 ² s

15. Problem Solve using Scientific Notation
A parking lot has a length of 1.1 X 10 ³ meters and a width of 2.4 X 10 ³ meters. What is the area of the parking lot (in scientific notation)?
Hint: What is the formula for the area of a rectangle?
Area = Length X Width. (1.1 X 2.4) (10 ³ ⁺ ³) (m X m); or long way.

16. Division Practice
You are travelling at approximately 30 m/s on a train. Your destination is Hogwarts which is roughly 3.8 X 10 ⁵ m from your home town (starting point). How long will it take you to get to Hogwarts? (Please round your answer to three decimal places and report it in S.N.)
0.127 X 10 ⁴ s = 1.27 X 10 ³ s.

17. International System of Units (S.I.) Units
A modified version of the metric system
Includes Base Units, Derived Units, and S.I. Prefixes.
S.I. Unit for length (straight-line distance between two points) = meter (m)
S.I. Unit for mass (quantity of matter in an object) = kilogram (kg)

18. S.i. Base units and Derived units

19. S.I. Prefixes