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Monday, September 24th

Monday, September 24th. Science Starter: 1. What does the word phenomenon mean? 2. Now use the word phenomenon in a sentence to describe the whirligig. . Planning Guide P. 44. Question- What question are you investigating in this experiment?

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Monday, September 24th

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  1. Monday, September 24th • Science Starter: 1. What does the word phenomenon mean? 2. Now use the word phenomenon in a sentence to describe the whirligig.

  2. Planning Guide P. 44 Question- • What question are you investigating in this experiment? How does the length of a whirligig’s blades affect the time it takes the whirligig to fall to the ground? How does the number of paper clips on the whirligig’s stem affect the time it takes the whirligig to fall to the ground? Prediction- • What do you think is going to happen? Why do you think that?

  3. Planning Guide P. 44 Variable Identification- • What part will you be changing? • Which variable will you change? • What conditions and procedures will you keep the same? (control) • What will you measure? • How many trials will you do?

  4. Planning Guide P. 44 Procedure & Data-Write detailed instructions and include . . . • How you will set up the whirligig • How you drop it • How you measure it’s performance • How you record the data • How many trials

  5. Tuesday, September 25thScience Starter: • What is the mean (average) for the following data? 5, 10, 3, 4, 3, 3. • What is the median for the following data? 5, 10, 3, 4, 3, 3 3. Define the following: • Interpret • Trend • Claim

  6. Wednesday, September 26thScience Starter: • What is a variable? • What is the difference between a dependent and independent variable? (P 51) 3. How do you make a test, a “fair test”? P 49

  7. Poster Requirements • The question you are trying to answer • Your predictions • Your procedure and what makes it a fair test 4. Your results and your confidence in them 5. You interpretation of results

  8. Thursday, September 27th A fertilizer company was experimenting with a new type of fertilizer. The company used 5 different types of plants that require the same amount of water and light: tomato plant, green Ivy, Aloe plant, Peace Lilly, & plumbago. They are all in the same soil and are given the same water amount. • 1-Identify the independent variable(s)? • 2-Identify the dependent variable(s)? • 3-What could the plant company do to make the test even more fair? (HINT: think about adding more variables)

  9. Friday, September 28thScience Starter: • Define the following • Force • Gravity • Drag

  10. Whirligig Science • Gravity pulls down. Gravity = 9.8m/s • More paper clips = larger mass. • Larger mass = larger pull. • Larger pull = faster fall. http://www.brainpop.com/ science/motionsforcesand time/gravity/

  11. Whirligig Science • Air resistance pushes up. • Longer wing span = more surface area. • More surface area = more air resistance. (collisions between molecules). • More air resistance = greater push up. • Greater push up = slower fall.

  12. But what about a feather Ms. Fike? Vacuum meaning an area with low air pressure like outer space.

  13. 4th Blk Enrichment • F=m*a Newton’s 2nd law of motion • Force= Mass times Acceleration If a ball is falling off a building what will be the force of impact on the ground? Mass of the ball is 100grams The ball is acceleration at 5 meters per second What is the force?

  14. F=M*A Answer: 500 m/s2 Try this one on your own!

  15. Answer: 100 m/s2

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