Evocative Question (Page 28)

How are the geologic principles for understanding the Earth’s history like a layer cake?

Brainstorm

Brainstorm with your group the answer the evocative question on page 28 in your notebook.

Foldable:

Uniformitarianism

Superposition

Original Horizontality

Catastrophism

Inside:

Look in pages 152-156 in your textbook. Find the explanation for each of the

geologic principles. (Original Horizontality is not in the book)

Write it on the notebook part of the inside of your foldable.

You have 7 minutes to find the information, and then we will share/check.

Uniformitarianism

The geologic processes that happen today (mountain building, volcanoes, rocks) happened the same way in the past AND change on the Earth is occurring slowly and constantly.

Brainstorm a simile about cake for the Principle of Uniformitarianism with your group. Write it in your foldable. The Principle of Uniformitarianism is like…

Superposition

In horizontal sedimentary rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.

Brainstorm a simile about cake for the Principle of Superposition with your group. Write it in your foldable. The Principle of Superposition is like…

Original Horizontality

Sediment settles out of water in horizontal layers. Larger sediment settles first and smaller sediment settles later. Sedimentary rocks form in horizontal layers.

Brainstorm a simile about cake for the Principle of Original Horizontality with your group. Write it in your foldable. The Principle of Original Horizontality is like…

Catastrophism

Geologic Change occurs suddenly Brainstorm a simile about cake for the

Principle of Catastrophism with your group. Write it in your foldable. The Principle of Catastrophism is like…

http://www.flickr.com/photos/sylvia/5727154433/sizes/m/in/photostream/http://www.flickr.com/photos/sanfranannie/3639238588/sizes/m/in/photostream/

Evocative Question

Brainstorm with your group and come up with a final answer to the evocative question.

Write Your Own

Now, on your own, write one simile on page 29 for each of the geologic principles.

With your simile, draw a picture that illustrates it.