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1. 1. Warm-Up, 08.26.2009 (15 mins)<br />Why is the scientific method important? Can you think of anything the scientific method can’t do?<br />Why is it important that scientists (and people in everyday life) be as accurate as possible?<br />What do you think life was like before systems of measurement were invented?<br />
2. 2. Announcements<br />By now you should have turned in:<br />Lab Safety Sheet (signed)<br />Class Rules/Syllabus (signed)<br />By the end of today you should have:<br />3 warm-ups & 3 wrap-ups<br />Your binder and dividers<br />
3. 3. Today’s Objectives<br />Students will be able to:<br />Understand how to measure and estimate lengths<br />Become more aware of linear measurements in the world and communicate better about the significance of these measurements.<br />Understand the importance of measurement in science.<br />Understand the relative sizes of things using scientific notation.<br />
4. 4. Measurement<br />Baby turtle!!!!!!!!!!!!!omg!!!!!!!!!!<br />
5. 5. Bill Nye - Measurement<br />
6. 6. Bill Nye the Science Guy - Measurement<br />
7. 7. Metric Conversions Ladder Method<br />T. Trimpe 2008 http://sciencespot.net/<br />
8. 8. 1<br />2<br />3<br />MetersLitersGrams<br />How do you use the “ladder” method? <br />1st – Determine your starting point.<br />2nd – Count the “jumps” to your ending point.<br />3rd – Move the decimal the same number of jumps in the same direction.<br />Starting Point<br />Ending Point<br />__.<br />__.<br />__.<br />2<br />3<br />1<br />Ladder Method<br />KILO1000Units<br />HECTO100Units<br />DEKA10Units<br />DECI0.1Unit<br />CENTI0.01Unit<br />MILLI0.001Unit<br />4 km = _________ m <br />How many jumps does it take?<br />4.<br />= 4000 m<br />
9. 9.
10. 10. Scientific Notation<br />A short-hand way of writing<br />large numbers without <br />writing all of the zeros.<br />
11. 11. The Distance From the Sun to the Earth<br />93,000,000<br />
12. 12. Step 1<br />Move decimal left<br />Leave only one number in front of decimal<br />93,000,000 = 9.3000000<br />
13. 13. Step 2<br />Write number without zeros<br />93,000,000 = 9.3<br />
14. 14. 7<br />93,000,000 = 9.3 x 10<br />Step 3<br />Count how many places you moved decimal<br />Make that your power of ten<br />
15. 15. The power of<br />ten is 7 because<br />the decimal<br />moved 7 places.<br />7<br />93,000,000 = 9.3 x 10<br />
16. 16. 93,000,000 --- Standard Form <br />9.3 x 107 --- Scientific Notation<br />
17. 17. Powers of Ten - Video<br />I need a two volunteers for after the video<br />One will write out the size of the smallest thing we know about.<br />One will write out the size of the largest thing we know about.<br />
18. 18.
19. 19. The largest “thing” currently known<br />
20. 20. The smallest measurable “thing” currently known<br />
21. 21. Discovering even smaller particles….<br />
22. 22. Wrap-Up<br />If you had one wish, what would it be and why? You can’t wish for more wishes, by the way.<br />What did we learn today?<br />What is due next class?<br />
23. 23. Metric System Scavenger Hunt<br />