1. Bell-ringer: 5 minutes
1. Understanding the fossil record can be used by scientists in the field of:  
a. Earth Science   b. Geology   c. Evolutionary biology  
d. Taxonomy  e. All of the above
2. Annotate and analyze the following image
Copy CCSS/MS, Objectives, HW
If missing a grade… copy directions in folder

3. Mantra Today is a great day for science because: science is power.
You are powerful because:
I always make a difference.

4. Agenda Class Website!! / Parent-signed notes?
Paper Return/ Grade Sheets/ Collection (Make-up work?)
This Week…
Dating Review
Death and Preservation
Guided and independent practice
Tomorrow’s Performance Task…
Summary/ questions/ feedback

5. Paper return/ Grade Sheet Update
Your Name Class/Period Miss Krichten Grade Sheet
No.
Name of Assignment
Unit Name
Date
Points Earned 1.
How Do You Know
Inquiry
8/6/15 2.
Science / Observations
8/7/15 3.
Measurement
8/11/15 4.
Scientific Method Quiz
8/17/15 5.
1st Attempt: Fossil Model
8/19/15

6. This Week…
Culminating in a single project Responsible to work at home Establishing controls and testing variables All in the intro to start us off Teaching one another what we care about most Ending with pride, ownership for your experiments

7. What do we need to understand?
What knowledge should we know to understand how animals fossilize/ get buried and left behind?
Environments, Grass/Soil, Weather, & Water Cycle
Where/why bones are found, what happens to them
Where animals live/ normal diet, animals vs. humans
Fossil and animal ID and types
Graves
Time Scale and Dating
How/where things die, extinctions/why, & decomposition (what/how long)
Preservation (freezing, amber, ash, etc.)
Which animals fossilize/how

8. Dating Review: Do-Now
List all the ways you can date something or determine how old it is.

9. Dating rings…
The usefulness of teeth and other bones…

10. Carbon Dating
Half-Lives  
  Years Past  
  C-14Atoms 
       0
   1 N 1
 5,730
1/2 N 2
11,460
1/4 N 3
17,190
 1/8 N 4
22,920
1/16 N 5
28,650
1/32 N 6
34,380
1/64 N 7
40,110
1/128 N 
Dating samples are usually charcoal, wood, bone, or shell, but any tissue that was ever alive can be dated
Following death, no new carbon is consumed. 
Progressively through time, the carbon-14 atoms decay
Half-life of carbon-14 is about 5,730 years
Discuss the pros and cons of using carbon dating techniques 

11. Location, Location, Location
Fossilization

13. Decomposition Scavengers Insects Bacteria and Fungi
Materials like carbon and nitrogen return to the soil or air and back into other living things

14. Decomposition Temperature Drops 3-6 hours: muscles stiffen Blood pools
Acidity rises, breaks down tissue on the inside
Bacteria multiply then insects
Gases cause bloat, oozing
Maggots and disintegration
All that remains of the cadaver at this stage is dry skin, cartilage, and bones
Plant growth

15. Extinctions: A Reset Button?
Asteroid impacts
Climate change
Volcanoes
Glaciation
Sea Rise
K-T extinction

16. Preservation

17. Tomorrow: Performance Task Rubric