VOLCANOES!. Academic Content Standards Earth and Space Sciences –Benchmark E: Describe the processes that contribute to the continuous changing of Earth’s.

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Presentation transcript:

VOLCANOES!

Academic Content Standards Earth and Space Sciences –Benchmark E: Describe the processes that contribute to the continuous changing of Earth’s surface (e.g., earthquakes, volcanic eruptions, erosion, mountian building and lithospheric plate movements 10. Explain that most major geological events (e.g. earthquakes, volcanic eruptions, hot spots, and mountain building) result from plate motion.

Different Types of Boundaries Divergent plate boundaries occur where plate motions cause plates to move apart Convergent plate boundaries occur where plate motions cause plates to collide with each other Transform plate boundaries occur where plates slide past each other

Volcanoes About 1500 active volcanoes in the world Molten rock below the Earth’s surface is magma, on Earth’s surface it is lava. The viscosity of magma increases as it’s temperature decreases The higher the viscosity, the thicker the substance Most active volcanoes are found along convergent plate boundaries

Formation of Different Magmas Different plate boundaries produce different magma compositions Different locations create magma from different types of rock

Bibliography The Good Earth: Introduction to Earth Science Academic Content Standards: K-12 Science