Earth History

Earth History

Assessment

Flashcard

Other Sciences

8th Grade

Hard

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16 questions

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1.

FLASHCARD QUESTION

Front

Types of fossils EXCEPT: Mineral Replacement, Bone neutralization, Carbon Film, Cast and Mold

Back

Bone neutralization

2.

FLASHCARD QUESTION

Front

The half-life of Carbon-14 is 5,730 years. How much parent material is left after 5,730 years?

Back

50%

3.

FLASHCARD QUESTION

Front

How can the absolute age of an igneous rock be determined?

Back

comparing radioactive isotopes

4.

FLASHCARD QUESTION

Front

What is the characteristic of the bottom layer of rock?

Back

the oldest

5.

FLASHCARD QUESTION

Front

Index fossils are useful for determining the relative age by ...

Back

a narrow time range and a wide geographic range

6.

FLASHCARD QUESTION

Front

In what way are index fossils and layers of ash found in ice cores?

Back

both are used for relative dating

7.

FLASHCARD QUESTION

Front

Which time period on the chart was the longest?

Back

Cambrian

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