210 questions and answers in this section

Natural Sciences » Geology

Explain why volcanic ash clouds can be visible for thousands of kilometers?

Explain why volcanic ash clouds can be visible for thousands of kilometers?

Volcanic ash clouds are projected very high into the atmosphere. They can reach up to 20 kilometers in height. It's like launching a ping-pong ball...

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Explain why temperatures in underground caves are generally stable?

Explain why temperatures in underground caves are generally stable?

Subterranean caves often form in limestone rocks. These rocks slowly dissolve in acidic water, creating cavities. The process takes millions of years. The formation of...

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Explain why are the Iguaçu Falls located at the junction of three countries?

Explain why are the Iguaçu Falls located at the junction of three countries?

The Iguaçu Falls were formed approximately 120 million years ago as a result of volcanic eruptions. Massive lava flows created thick basalt plateaus. Then, erosion...

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Explain why do some volcanoes deserve the term supervolcanoes?

Explain why do some volcanoes deserve the term "supervolcanoes"?

Supervolcanoes form where enormous magma reservoirs accumulate beneath the Earth's crust. This magma is very viscous. It cannot flow easily. As a result, immense pressure...

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Explain why does the Earth's rotation slowly slow down over time?

Explain why does the Earth's rotation slowly slow down over time?

Tidal forces are generated by the gravitational attraction of the Moon on the Earth. This attraction creates giant waves in the oceans, called tides. As...

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Explain why is the city of Baia (in Italy) currently submerged under the sea?

Explain why is the city of Baia (in Italy) currently submerged under the sea?

Baia, located in the present-day region of Campania in Italy, was once a luxurious seaside resort of the Roman Empire. Known for its natural thermal...

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Explain why some volcanic islands increase in size year after year?

Explain why some volcanic islands increase in size year after year?

Deep within the Earth, magma is constantly in motion. It's this liquid rock. Under pressure, it is always seeking an exit and often ends up...

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Explain why is the town of Kolmanskop (in Namibia) being engulfed by sand?

Explain why is the town of Kolmanskop (in Namibia) being engulfed by sand?

Kolmanskop is somewhat the story of a town that appeared out of nowhere. It all began in 1908 when a German railway worker named August...

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Explain why are the hot springs in Yellowstone of different colors?

Explain why are the hot springs in Yellowstone of different colors?

The different colors of Yellowstone's hot springs largely come from microbial pigments. Bacteria and algae, known as thermophiles, love the heat and thrive by producing...

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Explain why is the city of Jericoacoara (in Brazil) surrounded by immense sand dunes?

Explain why is the city of Jericoacoara (in Brazil) surrounded by immense sand dunes?

Jericoacoara is located in the state of Ceará, in the northeast of Brazil. It's quite a unique spot near the Atlantic Ocean. It's often said...

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