Introduction to earth processes
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Forces within the Earth cause earthquakes and volcanoes, which both release large amounts of energy that can impact the Earth's surface. Earthquakes occur when rocks break along faults due to movement of tectonic plates, while volcanoes form when magma escapes through openings where plates are moving or at hot spots, building up from eruptions of ash and lava. Recent examples of devastating earthquakes and volcanoes include those in Japan.
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Introduction to earth processes
- 1. Introduction to Earth Processes8SCIENCE: Mon. April 4, 2011
- 3. What are Earth Processes?Forces within the earthHow earthquakes and volcanoes are related to movements inside the earthBoth release great amounts of energy that can have effects on the Earth’s surfaceBoth can have devastating effectsMost recently in seen in Japan
- 4. EarthquakesRocks move and break along surfaces called faultsVibrations caused by rocks breaking along faultsUsually results from plates (large pieces of the Earth) that are moving under, over or past each other
- 5. VolcanoesOpening in Earth’s surface Can form a mountain when layers of ash and lava build upAre found where plates (large pieces of the Earth) are moving apart or together or at hot spotsMost of Earth’s volcanoes are not active