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Eighth Grade (Grade 8) Minerals Questions

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Grade 8 Minerals

This question is a part of a group with common instructions. View group »

An unidentified mineral can be scratched by orthoclase, but not by calcite. Which of the following best describes the mineral's hardness?
  1. less than 3
  2. more than 7
  3. less than 7 and more than 6
  4. more than 3 and less than 6
Grade 8 Minerals

This question is a part of a group with common instructions. View group »

Which statement comparing mineral hardness is true?
  1. calcite will only scratch gypsum
  2. calcite will only scratch gypsum and talc
  3. calcite will scratch any mineral softer than 3
  4. calcite will scratch any mineral harder than 3
Grade 8 Minerals

This question is a part of a group with common instructions. View group »

Topaz will scratch diamond.
  1. True
  2. False
Grade 8 Minerals

This question is a part of a group with common instructions. View group »

Quartz will scratch calcite.
  1. True
  2. False
Grade 8 Minerals

This question is a part of a group with common instructions. View group »

Orthoclase will scratch corundum.
  1. True
  2. False
Grade 8 Minerals
In geology, the term crystal refers to
  1. any clear, sparkly substance.
  2. minerals with a random arrangement of atoms that causes light interference and sparkle.
  3. minerals with an orderly arrangement of atoms with or without sparkle.
  4. clear volcanic glass that is faceted naturally.
Grade 8 Minerals
Describes a mineral that breaks evenly.
  1. color
  2. cleavage
  3. streak
  4. fracture
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