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Fossils

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Fossils

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  1. Fossils An A.K.S. Science Unit

  2. KWL

  3. What could this be?

  4. Riddle: What is old and tells us the story of life on Earth billions of years ago?

  5. Answer Fossils

  6. Fossils Facts • Fossils are the remnants of past life on Earth • Traces of prehistoric animals and plants (hard skeletons, shells of animals, and woody plant material) are preserved in sedimentary rock, amber and ice • A fossil is the imprint or remains of something that lived long ago • Fossils have also been found in amber (hardened tree sap)

  7. Tree sap is a sticky liquid that can harden like glue • When an insect gets stuck in the tree sap, it may become a fossil in amber

  8. Amber

  9. Frayer • Frayer “ Fossils” • Use pgs. C-22 and C-23 • Include a “Summary”

  10. Imprints

  11. Imprint Facts • Imprints are shallow prints or marks in solid rock • Living things made the imprints • Imprints are made when living things press on the material that will later turn into rock

  12. Molds

  13. Mold Facts • A mold is an empty space in rock where something once was or lived • Shells often leave fossils called molds • Shell molds form after shells are buried in sand or mud • As water seeps in, it washes away the shells

  14. Cast

  15. Cast Facts • A cast is a fossil made inside a mold • A cast can form when minerals seep into a mold • As the minerals harden, they form a copy of the mold’s shape

  16. Inverted Triangle Graphic • Create an “Inverted” triangle graphic • Compare and contrast: Imprints, Molds, and Cast • Include a “Summary” • Don’t forget the “Middle”

  17. Are they related?

  18. Fossils tell us about the past • Fossils help us learn about what Earth was like long ago • Fossils tell us about plants and animals that lived in the past • Fossils can also tell us about the how Earth has changed

  19. Venn Diagram Compare and contrast the “elephant” and the “woolly mammoth”

  20. What is going on in this picture?

  21. What do you know about these words? • Excavate • Archaeological dig • Decompose • Fourth or bottom layer

  22. Fossil Fuels

  23. Fossil Fuel Facts • A fuel is a material that is burned for its energy • Fossil fuels formed from the remains of plants and animals from long ago • Examples of fossil fuels include: oil, gasoline, coal, and natural gas, Why might we run out of coal in the future?

  24. Frayer diagram Frayer “Fossil Fuels” Include a “Summary”

  25. Writing Connection • Write a three paragraph “Informational” story about fossils • Include an Introduction, body, and conclusion • Remember to elaborate • Use all 6+1 traits of writing • Brainstorm • Revise and Edit (conventions)

  26. Fill out the “L” side of your KWL

  27. Science Experiment

  28. C.R.C.T. Prep Fossils are usually found in which type of rock? A. Igneous B. Sedimentary C. Metamorphic D. Craggy

  29. What is the least number of years it takes for a fossil to form? A. 10 years B. 100 years C. 1,000 years D. 10,000 years

  30. Which part of an animal is least likely to be preserved as a fossil? A. Bone B. Tooth C. Skin D. Claw

  31. Fossils may also be found in ____________. A. amber B. tar deposits C. frozen earth D. all of the above

  32. The body of an animal is more likely to become fossilized if it______________. A. is left on the surface on the ground B. does not contain hard body parts such as bones C. is buried deeply in the ground D. fossilization is equally likely with all of the above

  33. A trace fossil is ___________________. A. part of the original organism that has been preserved B. a mark left behind by a living organism C. a hollow print left by the outside of an organism D. a very small part of a fossil

  34. A woolly mammoth found frozen in a glacier is an example of a __________. A. body fossil B. trace fossil C. mold fossil D. cast fossil

  35. During an archaeological dig, you excavate through four layers of rock that contain fossils. Where are the oldest fossils located? A. in the first, or top, layer B. in the second layer C. in the third layer D. in the fourth, or bottom, layer

  36. Why do hard parts of an organism help fossils to form? A. hard parts are less likely to decompose B. hard parts are less likely to be eaten C. hard parts are less likely to be broken D. all of the above

  37. An archaeologist is a person who studies_____. • Remains of the past • Living things • Stars and planets • Rocks

  38. What conditions help preserve a fossil? • Exposure to air and water • Rapid burn • The presence of scavengers • None of the above

  39. Which part of a animal is most likely to be preserved in a fossil? • Lung • Eye • Blood • Tooth

  40. Song Time Sung To: "Are you Sleeping"Stomping Dinos, Stomping DinoWhere are you, Where are youWe never got to meet youNever can we greet youWe miss you, We miss you.