219 questions and answers in this section

Natural Sciences » Geology

Explain why gemstones have such vivid colors.

Explain why gemstones have such vivid colors.

When light passes through a gemstone, it encounters regularly arranged internal structures that are very precisely organized: the famous crystals. This organization acts somewhat like...

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Explain why mountains form and disappear over time?

Explain why mountains form and disappear over time?

Mountains generally begin with the gradual collision of large plates on the Earth's surface. Imagine two enormous pieces of the Earth's crust slowly pushing against...

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Explain why some gemstones change color in UV light.

Explain why some gemstones change color in UV light.

Gemstones are essentially crystals, meaning they are matter organized into regular and repetitive structures. Their beauty often comes from their precise composition and tiny chemical...

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Explain why some glaciers appear blue?

Explain why some glaciers appear blue?

The ice of glaciers is not just simple solid water. It forms through the gradual accumulation of compressed snow, which becomes denser over time. During...

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Explain why heavy rains can cause landslides.

Explain why heavy rains can cause landslides.

Landslides occur when a mass of soil, rocks, or mud suddenly rushes down a slope. It starts with a loss of balance of the materials...

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Explain why some seismic phenomena are accompanied by strange lights, called earthquake lights.

Explain why some seismic phenomena are accompanied by strange lights, called "earthquake lights".

The telluric lights are strange, very brief luminous phenomena that sometimes appear before, during, or just after an earthquake. They take various forms: floating glowing...

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Explain why caves can contain giant crystals.

Explain why caves can contain giant crystals.

These giant crystals often come into being thanks to the circulation of mineral-saturated fluids in caves located near volcanic or hydrothermal sources. Typically, magma located...

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Explain why can winds carve rocks into strange shapes?

Explain why can winds carve rocks into strange shapes?

Wind abrasion is when the wind acts as a sculptor on rocks by launching small grains of sand and particles at high speed. These fragments...

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Explain why some hot springs are rich in minerals beneficial for health.

Explain why some hot springs are rich in minerals beneficial for health.

The minerals in hot springs mainly come from the underground rocks through which the water flows. When rainwater or melted snow penetrates underground, it seeps...

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Explain why some regions of the globe are so rich in fossils?

Explain why some regions of the globe are so rich in fossils?

Some regions at the time offered ideal environments for fossil formation. Essentially, it required a setting with a lot of sediments, which quickly covered dead...

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