Fossils Flashcards
Sedimentary rocks is…
the type of rock that is made by hardened sediment. Sandstone, limestone, and coal are examples of sediment.
Fossils are…
preserved remains or traces of living things.
mold is…
a hollow area in sedimentin the shape pf an organism or part of an organism.
cast is…
a solid copy of the shape of an organism. A cast is totally different from the mold. In fact it’s the total oppisite.
petrified fossil are…
fossils in which minerals replace all or part of an organism. Rich water in dissolved minerals seeped into spaces in the plant cell’s.
Carbon film is…
an extremely thin coat of carbon rock. When sediment buries in an organism some of materials that make up that organism will eventually evaporate.
trace fossils…
provides evidence of the activities of an ancient organisms. For example a fossil footprint would be am example of a footprint.
Paleontologists are…
scientists who study fossils. They use information to determine the past life envoirment.
Scientific theory is…
a well-tested concept that explains a wid-range of observations.
evolution is…
the gradual change in living things over a long period of time.
extinct is…
if it’s no longer exists and will never apear again.
