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Grade 12 Science · Problem type
Foliated or nonfoliated?
Use this for “Is gneiss foliated? What was its parent rock?”
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Are the minerals lined up?
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Assumptions
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Heat and pressure change a rock without melting it.
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Pressure from one direction lines up flat minerals into layers or bands.
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Intrusive or extrusive?
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Earthquakes, seismic waves and Earth's interior
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Minerals and rocks: properties and how they form
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Silicate or not?
Use this for “Which of these minerals is a silicate?”
Cleavage or fracture?
Use this for “Does this mineral break along flat planes or along curved surfaces?”
Intrusive or extrusive?
Use this for “A rock has large crystals. Did it cool quickly or slowly?”