1. Scientific Method 6 Steps to Follow

2. Bell Work 9/14/11 1.350 mL = ______ L 2.7.65 kg = _____ dg 3.9876 cm = _____ Hm 4.554 DkL = ______ cL 5.123456 dg = ____ Kg

3. Scientific Method  Scientific Method: A series of organized procedures used to solve problems §Used as a problem solving technique. §All scientists use this method to answer questions. §Steps of the Scientific Method 1. State the Problem 2. Research 3. Form a Hypothesis 4. Test/Experiment 5. Analyze Data 6. Draw a conclusion

4. 1.State the Problem §In question form. §Must be open-ended. In other words, it can not be answered with a yes or a no. §It must be testable. §Something you don’t know the answer to. §Must be specific.

5. Purpose of Project §Explain why you are doing your project. l Example: I noticed that when we place bread in a drawer it doesn’t get moldy as fast as when it is left on the counter. With the cost of groceries rising, I thought that this experiment might show a way of keeping bread fresher longer and save my family a little money.

6. 2. Research §Used to educate yourself on your topic. §Use many references from printed sources—books, journals, magazines, and newspapers—as well as electronic sources—computer software and online services. §Gather information from professionals —instructors, librarians, and scientists, such as physicians and veterinarians.

7. Bell Work 9/16/11 List the 6 steps of the scientific method

8. Bell Work 9/19/11 List 3 things that you must do when you state the problem.

9. Bell Work 9/20/11 List 3 things that you should do when collecting research.

10. Bell Work 9/21/11 1)567.58 m = _____ km 2)9872 dg = ______ Hg 3)56.1203 mL = ______ L 4)785.987 cm = ______ dm

11. 3. Form a Hypothesis §This is your prediction, based on the research you have done, that will answer your purpose statement. §It is a prediction that can be tested §Your hypothesis will be stated in an “If…., then….” statement. §Example: “If fertilizer A is used on the plants, then the plants will grow larger”

12. Examples For each problem write a possible hypothesis. Remember a hypothesis is an if…. then... Statement 1.Two plants are given an equal amount of sunlight and water but one is given fertilizer and the other is not. The plants are observed daily for a month. 2.Two identical eggs are dropped from a rooftop. One is surrounded by a foam shield the other is not. What will happen to the eggs?

13. Bell Work 9/22/11 Write a hypothesis for each problem. Remember it needs to be an If…. then… statement 1.You notice that your parents put salt on the driveway when it snows. You wonder if ice melts faster with or without the salt. 2.You have a stain on your shirt and want to find out if shout or spray in wash works better to remove stains.

14. Variables §IV - Independent Variable l What you physically change in the experiment. l Example: the amount of light each piece of white bread receives. §DV - Dependent Variable l The outcome you are desiring to achieve. l This variable is what is being measured. l Example: the amount of mold grown over a period of time.

15. Variables Con’t §Constants - l these are things that could change in the experiment but you will keep the same through each trial. l Example: type of bread, same brand of bread, bought on the same day, used same type of light, same room temperature. §Control - l this is in the norm. l you compare everything to this. l Example: White bread that is left out based on how it is normally kept at your house.

16. For each problem write an IV, DV, Constants, and Control 1. Two plants are given an equal amount of sunlight and water but one is given fertilizer and the other is not. The plants are observed daily for a month. 2. Two identical eggs are dropped from a rooftop. One is surrounded by a foam shield the other is not. What will happen to the eggs?

17. Bell Work 9/16/10 For each problem write an IV, DV, Constants, and Control 1. You notice that your parents put salt on the driveway when it snows. You wonder if ice melts faster with or without the salt. 2. You have a stain on your shirt and want to find out if shout or spray in wash works better to remove stains.

18. Bell Work 9/16/10 For each problem write an IV, DV, Constants, and Control 1.Which weed killer works better: Weed Be Gone or No More Weeds? 2.Which music will make me fall asleep faster: classical or rock?

19. Bell Work 1. What is the metric system used to measure? 2. What is the metric system referred to as? 3. What is the basic unit for length? 4. In space, what is distance measured in?

20. Write a hypothesis and an IV, DV, Constants, and Control A researcher wants to see if plants will grow taller if they are given coke or water. The plants are given an equal amount of sunlight, soil, and growing space.

21. Write a hypothesis and an IV, DV, Constants, and Control A researcher wants to see what type of detergent works best to clean clothes. The two types of detergent he wants to test are Tide and All.

22. 4.Performing the Experiment §List materials needed first. §Write the procedure. l They must be numbered. l In logical order and easy to follow. §Do have only one independent variable during an experiment. §Do repeat the experiment more than once to verify your results. §Do have a control.

23. 5. Analyze Data §Written description of all data. Facts only. §Examples: Data tables and graphs/charts

24. 6. Conclusion: Your conclusion must answer your ___________ question and support or reject your hypothesis Paragraph 1 – State whether your hypothesis was supported by the results of the experiment. Explain why it was supported or why it was not supported. Paragraph 2 – State any experimental errors and explain what went right and/or wrong in the lab. Paragraph 3 – Summarize the entire lab. Paragraph 4 – Give your opinion of the lab. Explain if the lab was helpful or not and what you would change to improve the lab

25. Bell Work 9/22/10 1. Give 3 examples of written descriptions of data (hint: under analyze data notes). 2. What do you need to list first when performing the experiment? 3. What must your conclusion do?

26. Bell Work 9/23/10 – write the IV, DV, Constants, and control You want to find out if birds prefer to eat bird seed out of a particular color box. You place bird seed in a red, yellow, white, and black box and test to see which box the birds eat from the most.

27. Bell Work List the 6 steps of the scientific method in order then get out your study guide and review for the test.