Week of February 18th


Welcome to Our New Unit!

Geologic Change Over Time

Fossil Types

Preserved Remains - this type of fossil is the most informational for scientists!!  Most or all of the organism is preserved usually in ice, amber, or tar and asphalt.  See some examples below:

The Iceman - Otzi - he was found frozen in the Alps near Austria and Italy.  He is over 3, 000 years old!

10,000 year old Baby Lyuba - Woolly Mammoth found in 2007

May 2013 - female woolly mammoth found in Siberia with actual liquid blood in veins and fur - approx. 39,000 years old

Preserved Remains in amber

Preserved Remains in tar or asphalt

Trace Fossil

Dinosaur Footprints

Mold and Caste

Carbon Film

Petrified

Links for written assignments:

What Stories Do Rocks Tell?

How Has Life Changed Over Geologic Time?

Links for Exploration

Bill Nye Video: Fossils

Animation of how a fossil can form

Animation of how an unconformity can form

Evolving Planet Interactive

Questions To Consider:

1.  What is the principle of uniformitarianism?

2. What can fossils tells us?

3.  What type of rock do we find fossils in?

4.  What are the types of fossils?

5.  What can ice cores tell us?

6.  What factors have affected the diversity of life over time?

7.  What is relative dating?

8.  What are 5 ways rock layers can be disturbed?

9.  What are the laws of superposition, and crosscutting relationships,

10.  Study the layer diagram below - order the layers from oldest to youngest? (Hint: you really better do this question...hint, hint!!!)

11.  Study the layers in the column below - when did the mass extinction occur?