fossils clues to the past 1. page 63 2 fossils, november 18, 2014
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3
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
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)
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