2. 1.State The Problem: Start by asking a question. (Most important step) 2.Observation: Perceiving objects or events through 1 of your 5 senses. 3.Form a Hypothesis: Educated guess, based on observations, can be tested. (If- Then statement) 1. List the seven steps of the scientific method and what happens in each stage. List them in order.

3. 4.Test the Hypothesis: A hypothesis is often tested by an experiment. 5.Collect and Record Data: Charts, data tables, and graphs can help visualize information. 6.State a Conclusion Explanation supported by data (visual, verbal, or mathematical) 1. List the seven steps of the scientific method and what happens in each stage. List them in order.

4. 7.Repeat the Process Hypothesis must be tested many times. The experiment must be conducted in the same way each time. 1. List the seven steps of the scientific method and what happens in each stage. List them in order.

5. Goal of Science: To EXPAND knowledge; to investigate the natural world 2. What is the goal of science?

6. Educated guess, based on observations, can be tested. 3. Define Hypothesis.

7. Dependent Variable: The variable that changes in response to the independent variable  Responding Variable (What will change) Independent Variable: The variable that changes in response to the independent variable  Manipulated Variable (What we change) 4. What is the difference between a dependant and independent variable?

8. Observation: A statement describing a fact using one of your senses. Inference: Making a mental judgment based on observations 5. How are observation and inference different?

9. Independent Variable: Weight (paper-clip) Dependent Variable: The distance the paper airplane traveled 6. Go back to the paper airplane lab and identify the dependent and independent variable.

10. 7. How are observations, inferences, and theories different? 1. Observations require the five sense. 2. Inferences are conclusions based facts or observations. 3. Theories are broad comprehensive statement based on evidence and is thought to be true.

11.  A scientific law is accepted to be true all the time but is hard to explain why or how it happens.  Gravity

12. Construct a new hypothesis and test again. 9. If a hypothesis is false, what needs to take place?

13. Control group: Car with 87 octane gasoline (This also could be 89 OR 93) Independent Variable: 89 or 93 octane gas (This needs to be one of the different type of gas than the control group) Dependent Variable: The gas mileage of the cars 10. Construct an experiment…..

15. 1.Length: Meter (m) 2.Mass: Kilogram (kg) 3.Temperature: Kelvin (K) 4.Time: Second (s) 5.Amount of a Substance: Mole (mol) 6.Electric Current: Ampere (A) 7.Luminous Intensity: Candela (Cd) 11. List the 7 base units names and their units.

16.  Area: m 2  Volume: m 3  Density: g/cm 3  Speed: m/s  Acceleration: m/s 2 These are just 5 examples, there are an unlimited amount of derived units 12. List at least 5 derived units names and their units.

17. Mass grams Length meters Volume liters 13. List the units for mass, length and volume.

18. Precision – how exact a measurement is, how repeatable something is. 14. Define Precision.

19. Accuracy – the closeness of the measurement of the actual value, how close you are to the goal 15. Define Accuracy.

20. 45000 kL =____________ cL.034 mm=____________ hm 4004 dag=____________ dg 4,500,000,000.00000034 400,400 16. Convert the following.

21. a.4500000 a..0003 4.5 x 10 6 3.0 x 10 -4 17. Convert the following to scientific notation:

22. a.6.0 x 10 3 b.7.02 x 10 -4 6,000.000702 18. Convert the following to decimal form.

23. The measurable units of a measuring device plus one estimated digit. 19. Define significant figures.

24.  100104  1.0004  1000.4 .000011 .000100015