PPT-Fossils Fossils are the remains, imprints, or traces of prehistoric organisms.

Fossils have helped determine approximately when life first appeared when plants and animals arrived on land and when organisms became extinct CONDITIONS NEEDED FOR FOSSIL FORMATION Whether or not a dead organism becomes a fossil depends upon how well it is protected from scavengers and agents of physical destruction such as waves and currents. What are fossils?. FOSSILS. . are. . the . preserved remains or . traces.  of animals, plants, and other organisms . that lived long ago.. When an organism dies, hard parts of the animal (bones, teeth, shells, etc.) can be preserved in rock.. Remains . of once living organisms.. Form from decay and are buried by sediment.. Sediment hardens into rock and preserves the shape of the organisms.. Fossils. Fossils . Remains. Molds. . Casts. . Lauterbach 2016. Paleoclimate Data shows Earth’s Changing History over time:. These notes go in your Journals!. The Earth’s processes we see today including . erosion. , movement of lithospheric plates and changes in . WHAT IS A FOSSIL?. WHAT IS A FOSSIL?. WHAT IS A FOSSIL?. WHAT IS A FOSSIL?. TRACE . or. REMAINS of something that lived LONG AGO!. That exposes us to Earth’s BIOLOGICAL (_ _ _ _) PAST.. That . exposes us to Earth’s BIOLOGICAL (. Part II. Types . of Fossils:. Molds. . Casts. Trace fossils. Petrified . fossils. Body. Mold. . fossils. - . a visible empty . space . that was left after an . organism . was . buried in sediment and then . . Palaeontology. Palaeontology is . the . branch of science concerned . with. . fossil. Palaeontology is . the.  study of fossils as a . way of getting. . information. . about: . the history. Molds and Casts. Carbon Films. Preserved Remains. Trace Fossils. Petrified Fossils - . How do they form?. Mineral rich water soaks into cracks and crevices. Minerals “precipitate” and fill the spaces. . Fossils are the . preserved remains . or traces of . living. things. Most fossils form when . living. things die and are buried by . sediments. . The . sediments. slowly harden into . rock. Can you name any dinosaurs?. Do you know what they looked like or how they moved?. Scientists have been able to tell us many things about organisms (such as dinosaurs) that lived millions of years ago.. Can you name any dinosaurs?. Do you know what they looked like or how they moved?. Scientists have been able to tell us many things about organisms (such as dinosaurs) that lived millions of years ago.. 1. Blood . proteins in horses are chemically similar to blood proteins in monkeys. This similarity suggests that horses and . monkeys:.   .  . . a. can interbreed  .  . b. evolved at the same time  . you describe how this form of communication has changed over time?. Essential Question:. How do scientists define and support the theory of evolution?. Standards:. S7L5a. Explain that physical characteristics of organisms have changed over successive generations (e.g. Darwin’s finches and peppered moths of Manchester). 8. th. grade. Compare . fossils found in sedimentary rock to determine their relative age. . . http://www.brainpop.com/science/diversityoflife/fossils. /. . Standard for this lesson: . How can we tell what lived when?. ASSISTANT PROFESSOR. Department of Zoology. Nilkantharo. . Shinde. Science and Arts College, . Bhadrawati. Fossils. – . Sir Charles Lyell. Fossil can be defined as . “Any body or traces of body, animal or plant buried and preserved by natural cause”..