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