Earth Science







Using Dams for Hydro Power

Whether babbling peacefully across a sun-drenched meadow or raging as a torrent down a rocky canyon, water provides a vital lifeline to all living things. Although often depicted as a placid pond, water remains one of the most primitive and…
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Gases Found in Volcanoes

The magma (molten rock) found in volcanoes contains dissolved gases. Magma deep beneath the earth’s crust is under tremendous pressures. As the magma rises towards the surface there is a decrease in the pressure that the magma is under, and…
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How Opals are Formed

The stunning colors of a precious opal speak of its rarity. Precious opal gemstones are not found in many places in the world. Australia is home to 95% of the world’s deposit of opal. The special and specific conditions that…
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