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Do You Know? How does the type or location of a living thing determine what becomes a fossil? Take out behavior log Copy Objective, HW into assignment.

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Presentation on theme: "Do You Know? How does the type or location of a living thing determine what becomes a fossil? Take out behavior log Copy Objective, HW into assignment."— Presentation transcript:

1 Do You Know? How does the type or location of a living thing determine what becomes a fossil? Take out behavior log Copy Objective, HW into assignment list

2 Activate Prior Knowledge:
Analyze the following image:

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

4 Connections Friday How could you find out more about or interact with fossils or previous life? OR Local current event related to modeling, causes and effects, fossils… Tell me about a time when you saw a fossil!

5 Paper return/ Grade Sheet Update
No. Name of Assignment Unit Name Date Points Earned 1. How Do You Know Inquiry 8/10/16 /10 2. Community Map 8/15/16 /7 3. Scientific Method Quiz 8/18/16 /16 4. Biweekly Test #1 RI/RL 8/24/16

6 Goals * State the Objective(s)/Standard (s)- Sci.7.1a, L.7.4b-L.7.6, RI.7.4 * State the Purpose (Big Idea) - By understanding how fossils are made, we learn our place in life, and what our future may be SWBAT reference relevant information and quotes as evidence to support performance task explanations of the cause of fossilization

7 Agenda Identify what is needed to know to revise and understand the situation in the model Dating Review Death and Preservation Summary/ feedback/ questions

8 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

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

10 Dating rings… The usefulness of teeth and other bones…

11 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 

12 Location, Location, Location
Fossilization

13

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

15 Decomposition/Decay 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

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

17 Preservation

18 Compare your notes! Students will compare notes taken during class and write down any missing quotes or facts that would be useful to answer how fossilization occurs

19 Summary/ questions There are multiple ways to tell how old something is There are multiple ways to be preserved after death Stages of decay bring flesh to bones Last questions… Redoing performance task Monday! Be ready! Know your related vocab, how things decay, and become fossils!

20 GO GO FEEDBACK FRONTIER!
Miss K – In my baggie (Comments on my teaching, living up to my goals, and any personal things you need to privately tell me) Your peers – Feedback to 1 or 2 people… What is something you saw him/her do that matched up with our class values? Why was it really great to see this?

21 Monday: Redo Performance Task

22

23 Optional HW David Attenborough’s “First Life”

24 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


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