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FOSSILS

Clues to the past

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Page 63

Fossils, November 18, 2014

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Fossils

What is a fossil? (page 297)

Fossils – preserved remains or evidence of ancient living things

Paleontologist – someone who studies fossils

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Fossils

How do fossils form?

Most form when living things die and are buried in sediment. Over time, the sediment forms sedimentary rock.

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Fossils

What are the types of fossils? (pages 300-301)

Petrified fossils – minerals replace the organism

http://www.yourgemologist.com/Kids/petrifiedwood/petrifiedwood.html

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Fossils

What are the types of fossils? (pages 300-301)

Mold – an indentation left in sedimentary rock of the organism’s shape

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Fossils

What are the types of fossils? (pages 300-301)

Cast – a copy of the organism’s shape (made from the fossil mold)

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Fossils

What are the types of fossils? (pages 300-301)

Carbon films – carbon left from an organism is left in the sediment

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Fossils

What are the types of fossils? (pages 300-301)

Trace fossils – evidence of an organism’s activities (footprints)

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Fossils

What are the types of fossils? (pages 300-301) Preserved remains – an

organism that’s been covered in a material that reduces its deterioration (organism stuck in tar, amber, or ice)

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Fossils

What are the types of fossils? (pages 300-301)

Index fossils – fossils of a widely distributed organism that existed briefly. Index fossils are used to determine the relative age of rock layers.

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Page 62 – Fossils 4-Square

Copy the 4-square box onto page 62.

#1 #2

#3 #4

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Page 62 – Fossils 4-Square

Complete the 4-square by answering the questions or completing the sentences.

#1WHAT DOES A

PALEONTOLOGIST DO?

#2A CAST FOSSIL IS LIKE A STATUE BECAUSE _________________________________________________________

#3A TRACE FOSSIL IS

LIKE A DIARY BECAUSE

__________________________________________

_______________

#4WHAT WOULD YOU

CHANGE OR ADD TO WHAT A

PALEONTOLOGIST DOES (SQUARE #1)