Fossils Crossword
This printable crossword puzzle on the topic of Rocks & Minerals has 12 clues. Answers range from 4 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
no members of that species are alive
preserved remains or taces of an organism
sediment builds up in layers and harden; turns into rock
organisms buried in sediment and changed to rock
hollow space in sediment in the shape of the organism
a copy of the shape of an organisms
organisms buried in a substance other than sediments
tells scientists that one fossil is older than another based on the layer of the earth it is found in
determines the actual age of a fossil
other elements found in rocks
the time it takes for 1/2 of the atoms to decay
millions of fossils that scientist have collected
