Types of Rocks

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Across
  1. 4. igneous rocks that form when lava on Earth’s surface rapidly cools and hardens
  2. 8. sedimentary rocks made of sediments left behind by living things
  3. 9. rocks that form when sediments are compressed together
  4. 10. rocks that form when existing rocks are changed by factors like extreme heat and pressure over a long period of time
  5. 12. rocks that form when hot, molten rock cools and hardens
  6. 13. metamorphic rocks that form under high heat and low pressure
Down
  1. 1. igneous rocks that form when magma under Earth’s surface slowly cools and hardens
  2. 2. metamorphic rocks that form under high heat and high pressure
  3. 3. a solid collection of one or more minerals
  4. 5. sedimentary rocks made of tiny fragments of other rocks
  5. 6. tiny fragments of rocks, minerals, and organic materials, like bones, shells, and roots
  6. 7. sedimentary rocks made of mineral sediments left behind by evaporated water
  7. 11. naturally occurring solids with atoms organized in a pattern