ROCKS CROSSWORD PUZZLE

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Across
  1. 1. molten rock that reaches Earth's surface (4 letters)
  2. 3. rock type changed by heat and pressure (11 letters)
  3. 4. small particles that form sedimentary rocks (8 letters)
  4. 6. sometimes found in sedimentary rocks (6 letters)
  5. 8. sedimentary rock made of sand grains (9 letters)
Down
  1. 1. common coarse-grained igneous rock (7 letters)
  2. 2. basic building block of all rocks (7 letters)
  3. 5. type of rock formed from cooled magma or lava (7 letters)
  4. 7. metamorphic rock formed from limestone (6 letters)