3 rd Grade Science Review - PowerPoint PPT Presentation

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  1. 3rd Grade Science Review Carolina Fleming

  2. Steps to the Scientific Method

  3. Question Hypothesis Experiment Observation Conclusion

  4. Question Hypothesis Experiment Observation Conclusion Quiet Hippos Eat Only Carrots!

  5. Six Simple Machines

  6. Lever A straight rod or board that pivots on a fulcrum

  7. Pulley Wheel with a rope used to pull load up or down

  8. Inclined Plane A sloping surface, such as a ramp

  9. Wedge Two inclined planes joined back to back-used to cut

  10. Screw An inclined plane wrapped around an axle

  11. Wheel & Axle Wheel fastened to an axle that turn together

  12. Food Chains

  13. Producers - plants • Consumers- Herbivores eat only plants Carnivores eat only meats Omnivores eat both plants and meat • Decomposers

  14. Complete the Food Chain Click here!!

  15. Soil

  16. Soil… provides the support and nutrients necessary for plant growth is a natural resource that should be conserved. Help take care of our Earth!

  17. Soil is composed of rocks, clay, silt, sand and humus + + + rocks larger than clay but smaller than a sand clay = SOIL + sand humus

  18. Ground level Topsoil Subsoil Bedrock

  19. Water Cycle

  20. *Water is essential for all living things! *The water cycle never stops! *It is driven by the power of the SUN

  21. There are 4 steps: Evaporation Condensation Precipitation Collection E-C-P-C

  22. Condensation Precipitation Evaporation Collection