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Stack #62171
| Flap 14.1 science | Flap 24.1answers |
|---|---|
| fossil | are the preseverved remains or traces of living things |
| sedimentary rock | is the type of rock that is made of hardened sediment |
| mold | a hollow area in sediment in the shape of an organisms or part of an organism |
| cast | a solid copy of the shape of an organism |
| petrified fossil | are fossil in which minersls replace all or part of an organism |
| carbon film | an extremely thin coating of carbon on rock |
| trace fossil | provide evidence of the activities of ancient organisms |
| paleontologists | collect fossils from sedimentary rocks all over the world |
| scientific theory | is a well-tested concept that explains a wide range of observations |
| evolution | is the gradual change in living things over long periods of time |
| extinct | something that no longer exist and will never again live on Earth |
| How do fossils form | most fossils form when living things die and are buried by sediments. The sediments slowly harden into rock and preserve the shapes of the organisms |
| What are the different kinds of fossils | petrified,carbon,trace preservedremains,or mold and cast |
| What does the fossil record tell about arganisnms and environments fo the past | fossil record provides evidence about the history of life and past envieonments on Earth. The fossil record also shows that different groups of organisms have changed over time |
| What are three ways in which the remains of an organism can e preserved with little change | Amber,freezing,tar |
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Loterewl
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