Maryland Education Standards. Types of Rocks: Metamorphic: formed when igneous or sedimentary rocks are put under heat and/or pressure in the Earth's crust. Igneous: Formed when crystallized through melting and cooling. Sedimentary: Formed through the accumulation of sediment. Compaction - process by which overlying pressure from rocks and soil reduces the size or volume of sediments. Rock cycle - the continental process by which rocks can be changed into different types.
The resources above correspond to the standards listed below:
MD.2.0. Earth/Space Science: Students will use scientific skills and processes to explain the chemical and physical interactions (i.e., natural forces and cycles, transfer of energy) of the environment, Earth, and the universe that occur over time.
2.B.1. Earth History: Explain how sedimentary rock is formed periodically, embedding plant and animal remains and leaving a record of the sequence in which the plants and animals appeared and disappeared.
2.B.1.a. Explain how sedimentary rock buried deep enough may be reformed by pressure and heat and these reformed rock layers may be forced up again to become land surface and even mountains.
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