Maryland Education Standards. An earthquake is the result of a release of stored energy in the Earth's crust that creates seismic waves. Seismographs are machines that detect and measure seismic waves caused by earthquakes. P waves, or primary seismic waves, are the fastest moving waves. They travel through solids, liquids and gases. S waves or secondary waves are slower and can travel through solids, but not liquids. The slowest and most destructive seismic waves are called surface waves.
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.
2.B.1.c. Explain why some fossils found in the top layers of sedimentary rock are older then those found beneath in lower layers: Folding; Breaking; Uplift; Faulting; Tilting.
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