Geologic Time Scale and the Dating Method & Index Fossil

Which is older sandstone or limestone?

(a)  

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What is older: mudstone or siltstone?

(a)  

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NGSS.MS-ESS1-4

Which is the youngest rock in this strata?

(a)  

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NGSS.MS-ESS1-4

What is the oldest rock in this strata?

(a)  

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NGSS.MS-ESS1-4

Match the following

• Radioactive isotopes determine rocks older than 1 myo

• Ammonites lived in the Mesozoic era

• Layers in the rocks

• Absolute Dating Method

• Relative Dating Method

• Relative Dating Method

• Absolute Dating Method

• Actual date of parent and daughter formation in rocks

In the geologic time scale, the ​ (a)   ages are on the top and the oldest on the ​ (b)   . The time scale is based upon ​ (c)   , therefore there aren’t any specific times listed with each era. The timescale is divided into ​ (d)   , each eon into eras, each era into periods, and each period into ​ (e)   .

• youngest
• bottom
• relative times
• eons
• epochs

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NGSS.MS-ESS1-4

Which of the following does NOT serve as basis in identifying index fossils?

• An organism must have lived only during a short period of time.

• Many fossils of the organism must be found in rock layers.

• The fossil must be found in a limited area on Earth.

• The organism must be unique.

What type of rock layers’ age can be identified using index fossils?

• relative age

• index age

• fixed aged

• absolute age

Based on the order of events scheme, how do you compare the ages of rocks/ fossils in an area?

• Rocks/ fossils on top are older than the rocks/ fossils below

• Rocks/ fossils on top are younger than the rocks/ fossils below

• Rocks/ fossils on top are of the same age with the rocks/ fossils below

• Ages of rock/ fossils on top and below cannot be identified

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NGSS.MS-ESS1-4

Why is it that divisions in the geologic time scale are mostly named form places in Europe?

• Because Earth’s geologic history started in Europe.

• Because the Geologic Time Scale is very useful and applicable in European countries.

• Because most fossils were found in Europe.

• Because the geologic time scale was first developed by European geologists.

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NGSS.MS-ESS1-4