Earth’s History 2: Vocab and Fossil Timeline

Presentation

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Science

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8th Grade

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Practice Problem

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Easy

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NGSS

MS-ESS1-4, HS-ESS1-5

Standards-aligned

Stephanie Roush

Used 18+ times

FREE Resource

11 Slides • 6 Questions

Multiple Select

Which of these are conditions for forming fossils?

needs to be something large that will make an imprint

quick burial of organism

any creature can become a fossil

layers of sediment build up over organism

animals dies on top of sedimentary rock

Multiple Choice

What is the law of superposition?

The oldest layers are at the top and the youngest are at the bottom.

All layers are formed simultaneously regardless of age.

The oldest layers are at the bottom and the youngest are at the top.

Sedimentary layers are always horizontal and never tilted.

Multiple Choice

What is the difference between index fossils and trace fossils?

Index fossils are formed from preserved remains, while trace fossils are not.

Trace fossils are used for dating rock layers, while index fossils show organism activity.

Index fossils are found only in sedimentary rocks, while trace fossils can be found in all rock types.

Index fossils are used for dating rock layers, while trace fossils are evidence of organism activity.

Open Ended

How do scientists determine the actual age of rocks?

Type response here

Open Ended

Which layers from North America are the same age as layers from Europe? Use the number or letter of the layer to identify it.

Type response here

Multiple Choice

How is the layer of iridium used to tell the relative age of different rock strata and fossils?

The layer of iridium helps match which layers of rock are older than the meteor crash that deposited the iridium and which are younger.

The iridium shows scientists what was alive during that time.

The layer of iridium is found only in volcanic rock formations.

Iridium is used to date fossils directly through radiometric dating.

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