1. What are differences between metamorphic, sedimentary, and igneous rocks?
Answer: Metamorphic rocks formed by temperature and pressure changes inside the Earth. Sedimentary rocks formed from the combination of weathering by cementation or precipitation on the Earth's surface. And Igneous rock formed by the cooling of magma (molten rock) inside the Earth surface.
2. What rock did you find the most interesting? Why?
Answer: An igneous rock, because it contains very beautiful interlocking crystals. They also very strong and make the rock hard. (this type of rock never contain fossils)
3. What are grains in the rocks? can you show me?
Answer: Grains give the rocks its texture (look and feel)