Geological Dating Techniques Quiz

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Questions and Answers

Geologists use dating techniques to determine the age of ______

rocks

Relative dating uses fossils, which are prehistoric remains preserved in ______

rock

Sedimentary rocks are useful in relative dating because they are formed from fragments of different types of ______

rocks

The principle of superposition states that in any undisturbed sequence of rock layers, the youngest rocks are usually on the top and the oldest layer of rocks would be at the ______

<p>bottom</p> Signup and view all the answers

Relative dating is used to determine whether an object is ______ or younger

<p>older</p> Signup and view all the answers

FOSSILS are the preserved remains or traces of plants, animals, and other organisms from the ______

<p>past</p> Signup and view all the answers

INDEX FOSSILS serve as a guide or indicator of certain geologic ______

<p>periods</p> Signup and view all the answers

ERAS are divided into smaller subdivisions called ______

<p>eras</p> Signup and view all the answers

The PHANEROZOIC EON is the most recent eon which is about 500 million years ______

<p>ago</p> Signup and view all the answers

A preserved remains or traces of plants, animals, and other organisms from the ______

<p>past</p> Signup and view all the answers

Flashcards

Dating techniques

Methods used by geologists to ascertain the age of rocks.

Fossils

Prehistoric remains preserved in rock, used in relative dating.

Sedimentary rocks

Useful in relative dating because they are formed from fragments of different types of rocks.

Principle of superposition

States that in undisturbed rock layers, the youngest rocks are typically on top, and the oldest are at the bottom.

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Relative dating

Used to determine whether an object is older or younger than another.

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Fossils

Preserved remains or traces of plants, animals, and other organisms from the past.

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Index Fossils

Guide or indicate certain geologic periods.

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Periods

Smaller subdivisions of eras.

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Phanerozoic Eon

The most recent eon, which began about 500 million years ago.

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Study Notes

Dating Techniques

  • Geologists use dating techniques to determine the age of rocks and rock layers.

Relative Dating

  • Relative dating uses fossils, which are prehistoric remains preserved in rock layers.
  • Sedimentary rocks are useful in relative dating because they are formed from fragments of different types of rocks and fossils.
  • The principle of superposition states that in any undisturbed sequence of rock layers, the youngest rocks are usually on the top and the oldest layer of rocks would be at the bottom.
  • Relative dating is used to determine whether an object is older or younger.

Fossils

  • Fossils are the preserved remains or traces of plants, animals, and other organisms from the past.
  • Index fossils serve as a guide or indicator of certain geologic periods.

Geological Time Scale

  • Eras are divided into smaller subdivisions called periods.
  • The Phanerozoic Eon is the most recent eon which is about 500 million years old.
  • A preserved remains or traces of plants, animals, and other organisms from the past are considered fossils.

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