Science 10 Lesson Outline Date: Feb 29th
| Last lessons Objectives
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Final for Chemistry
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Evaluations
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| Today’s Objective | Geological Time and Half life
7.2 In text
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| Topic
Number One |
So if the history of the earth was a meter stick, when did the earth begin and when did humans show up?
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. The universe is full of naturally occurring radioactive elements. Radioactive atoms are inherently unstable; over time, radioactive “parent atoms” decay into stable “daughter atoms.”
7.2 In our text.
Geological Time Scale http://www.ucmp.berkeley.edu/help/timeform.php
Wiki on Geological Time https://en.wikipedia.org/wiki/Geologic_time_scale
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| Topic
Number Two |
https://portal.sd22.bc.ca/class/4uyrqzj/_layouts/15/WopiFrame.aspx?sourcedoc=/class/4uyrqzj/Documents/7.2%20HALF-LIFE.ppt&action=default
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| Topic
Number Three |
Resources
Wiki https://en.wikipedia.org/wiki/Half-life Study.com Youtube Explaination https://www.youtube.com/watch?v=opjJ-3Tkfyg
Bozeman https://www.youtube.com/watch?v=HRwey6cwGHo
Most radioactive places on earth https://www.youtube.com/watch?v=8tL4sjHQSTk
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| Take Home Message | Cool story about a clock that will run for 10000 years!
http://www.wired.com/2011/06/10000-year-clock/
Steward Brand and the long now clock https://www.ted.com/talks/stewart_brand_on_the_long_now?language=en
The longnow organization http://longnow.org/store/clock-long-now-time-and-responsibility-stewart-brand/
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