Study

4 - Rocks and Minerals

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  • What mineral is used in baby powder?
    talc
  • Give 2 examples of igneous rocks
    granite, basalt, obsidian, pumice, peridotite, scoria....
  • Give 2 examples of metamorphic rocks
    marble, slate, jadeite, eclogite, schist...
  • How are igneous rocks formed?
    Igneous rocks form when magma (molten rock) cools and crystallizes
  • What mineral is used for making plaster and toothpaste?
    gypsum
  • Igneous, sedimentary, or metamorphic? Marble is a_______
    metamorphic rock
  • Igneous, sedimentary, or metamorphic? Limestone is a_______
    sedimentary rock
  • What mineral is used for making aluminium? Alumina is extracted from here.
    bauxite
  • How are sedimentary rocks formed?
    Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism
  • How are metamorphic rocks formed?
    Metamorphic rocks are formed when other rocks are affected by great temperatures and pressures
  • Name the three main types of rocks
    igneous, sedimentary, and metamorphic rocks
  • Igneous rocks form when magma (molten rock) ________ and crystallizes.
    cools
  • What rock is formed when other rocks are affected by great temperatures and pressures?
    metamorphic rock
  • Name three causes of weathering
    wind and water, animals' hooves, plants' roots, heating and cooling, water freezing
  • How is glass made?
    sand and other minerals are heated until they melt
  • A ______ is a solid made from one or more minerals.
    rock
  • Depending on the minerals rocks contain, they have different________
    colors, hardness, texture (rough or smooth(, lustre (shiny or dull)
  • What is a rock?
    a solid made from one or more minerals
  • Give an example of a mineral
    salt, graphite, talc, diamond, alumina, calcite, gypsum
  • Crystals can be broken into small pieces called ________.
    grains
  • The grey thing inside the pencil is called ___. (the tip of the pencil when sharpened)
    graphite
  • What is weathering?
    the breaking down or dissolving of rocks on the Earth's surface
  • Give 2 examples of sedimentary rocks
    sandstone, limestone, shale, chalk, banded iron, glacial conglomerate
  • Igneous, sedimentary, or metamorphic? Granite is an_______
    igneous rock