Wednesday, March 4, 2009

Objective: Students will be able to identify the types of fossils and how they are formed.

Bellringer: Name 2 types of fossils & how they were formed.

4 Minutes Remaining…

Wednesday, March 4, 2009

Objective: Students will be able to identify the types of fossils and how they are formed.

Bellringer: Name 2 types of fossils & how they were formed.

3 Minutes Remaining…

Wednesday, March 4, 2009 last chance to view BR - 1 min

Objective: Students will be able to identify the types of fossils and how they are formed.

Bellringer: Name 2 types of fossils & how they were formed.

2 Minutes Remaining…

…and you think you look weird when you sneeze…

1 Minute Remaining…

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Turn In Bellringers!!!

March 4, 2009

AGENDA:

1 – Bellringer

2 – Review homework

3 - Powerpoint Presentation

4 – Review Key Topics

HOMEWORK (Quiz tomorrow! You can use your notes):

Quiz is on Section 15.1

~ Cornell Notes

~ Vocabulary

VOCABULARY REVIEW1. Fossil2. Plate Tectonics3. Paleontologist4. Relative dating5. Radiometric

dating6. Extinct7. Geologic Time

Scale8. Pangaea9. Continent10.Country

A. Theory that explains how continents move

B. Estimated date based on location of fossil

C. Entire species died offD. The original “super continent”E. Evidence of organism that lived a

long time agoF. landmassG. Political regimeH. Puts palenotological events in

orderI. Dating process using isotopesJ. One who studies ancient

organisms

How many billion years ago do scientists believe Earth formed?

Scientists believe Earth formed 4.6 Billion Years ago.

Inner Earth

Plate Movement

Continental Drift

Continental Drift & Plate Tectonics

• Early 20th century: continents moved about the face of the Earth (Wegner used fossil evidence)

• Contradicted established views that the continents and oceans were permanent stationary features on the face of the Earth

• Current theory: Earth’s crust is broken into numerous plates that are in continual motion

Currently….

What is the difference between a continent & a country?

Continent = landCountry = political regime

7 Continents

1. Antarctica

2. Australia

3. Africa

4. Asia

5. Europe

6. North America

7. South America

Ways to become Fossilized:1. Permineralization & Petrification – organic tissues

are replaced with minerals from the surrounding rock, including silica, calcite or pyrite.

2. Unaltered preservation - organism is preserved in its original state (example: trapped in tree sap)

3. Carbonization (Coalification) - removal of all but the carbon elements (hydrogen, oxygen, and nitrogen are removed)

4. Trace & Molds - These fossils are the molds and casts of organisms which have dissolved or rotted away, leaving only a trace of their existence.

Fossilization Process

1. Death

2. Minerals from sediment seep into bone

3. Sediment covers body

4. More sediment covers & pressure compresses fossil

5. Extraction (fossil “discovered”)

Spontaneous Generation vs Biogenesis

Spontaneous Generation = living from non-living

Biogenesis = living from living

Pasteurization

• His research proved biogenesis

Process: liquid is heated to kill off microbes

~ milk

~ juice

~ cheese

March 4, 2009

HOMEWORK (Quiz tomorrow! You can use your notes):

Quiz is on Section 15.1 ~ Cornell Notes~ Vocabulary