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Rocks n Soils Review

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  • What does the Mohs scale tell you?
    How hard something is.
  • What are the 3 types of rocks?
    igneous, sedimentary, metamorphic
  • What properties of rocks can you use to classify them?
    Color, texture, shape, size, pattern, luster etc
  • How can scientists test the texture of the soil?
    Ball test, ribbon text, water test
  • Which rock is the hardest? Which is the softest?
    diamond, talc
  • How are fossils formed?
    see picture
  • What is soil made of?
    organic matter (humus), rock particles, water, air
  • What are the soil horizons? What can be found in each?
    Humus, top soil, sub soil, bedrock
  • What are the types of fossils?
    Mold fossil, cast fossil, true form fossil, trace fossil
  • Where can you find rocks?
    Possible answers: the earth's crust, in buildings, statues, the ocean floor, mountains, park etc
  • What are the types of soil?
    sandy, loamy, clay, silty etc
  • How are sedimentary rocks formed?
    From layers of sediment pressed together
  • How are metamorphic rocks formed?
    From sedimentary and igneous rocks under a lot of heat and pressure.
  • Who was Mary Anning?
    The first fossil hunter, paleontologist
  • What process is needed to make metamorphic rock?
    heat and pressure
  • What process is needed to make sedimentary rock?
    weathering and erosion, compaction and cementation
  • What is a fossil?
    An animal preserved in rock.
  • How are igneous rocks formed?
    From cooled magma
  • What do scientists use to test the color of soil?
    Munsell Color Chart
  • Why are earthworms important?
    They fertilize the soil, they add air to the soil, etc