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Fossil Record

Teacher: Mr. Gast
Across
As you dig deeper you would expect the fossil age to be _________
Radioactive isotope in your bones used to age fossils. ( _____ -14)
Type of fossil formed when an organism decays and leaves an imprint
Life on Earth is estimated to be 3.5 _______ years old.
This individual project is due in a few weeks.
A fossil type formed when a mold is filled with minerals creating a copy of the organism
Down
Force where a substance is pulled apart at its ends...think spahgetti.
Time it takes half of Carbon 14 to decay is called this (Two Words)
Plants that we are charting the growth of
4B is an example of a team's table ________
Estimated that 98% of all the species of organisms that ever lived are now __________
Type of stick your bridge is made of. Hint: Panda food
The preserved evidence of once living organisms.
Your team folder always get turned in under this...not a fossil
Triangular shape that provides strong support