Review WS

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Earth History Unit Review WS

Vocab

Principle of

Uniformitarianism

Principle of Original

Horizontality

Disconformity

James Hutton

Unconformities

Relative Age

Nonconformity

Stratigraphic column

Mummification

Petrification

Gastroliths

Cross cutting relationships

Absolute dating

Amber

Carbon films

Trace Fossils

Law of cross-cutting relationships

Half-life

Tar Seeps

Molds & casts

Questions

1.

What type of rocks are most commonly studied by paleontologists?

2.

3.

How is an isotope used to determine absolute age?

What organism is most likely to become a fossil?

4.

5.

What characteristics are required for a fossil to be designated as an index fossil?

Describe how geologic time organized?

Law of Superposition

Angular nonconformity

Stratigraphy

Fossils

Freezing

Coprolites

6.

1.

Compare & Contrast two periods of Earth’s history.

Absolute Age/Half-Life problems

You are studying the element Bensonium. You have 500g of Bensonium, and it has a half-life of 10 years. How much Bensonium do you have after 100 years?

2.

You have an an element Ramsium with a half-life of 1 million years. You start with a 1000g sample. How much do you have left after 10 million years?

Stratigraphic Column

*Identify the order that these layers formed in and identify the type of unconformity occurred in each picture

Stratigraphy

*Correlate all the layers shown in the stratigraphic sections

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