219 questions and answers in this section

Natural Sciences » Geology

Explain why some volcanoes are active while others are dormant?

Explain why some volcanoes are active while others are dormant?

Magma can be fluid or viscous. It depends on its chemical composition. Magma with a lot of silica? Very viscous. This makes eruptions more explosive. Magma with...

Read full answer

Explain why has the city of Crescent City (in the United States) been affected by so many tsunamis?

Explain why has the city of Crescent City (in the United States) been affected by so many tsunamis?

Crescent City is nestled on the west coast of the United States, at the very northern tip of California. It is located along the Pacific...

Read full answer

Explain why do Icelandic volcanoes emit ash clouds?

Explain why do Icelandic volcanoes emit ash clouds?

Iceland is somewhat like the center of the world when it comes to volcanoes. Located at the boundary of two tectonic plates, North America and...

Read full answer

Explain why most volcanoes are located at the boundaries of tectonic plates?

Explain why most volcanoes are located at the boundaries of tectonic plates?

Volcanoes primarily form when magma, a mixture of partially melted rock, reaches the Earth's surface. This magma comes from the Earth's mantle, a semi-liquid layer...

Read full answer

Explain why do salt crystals form in certain desert conditions?

Explain why do salt crystals form in certain desert conditions?

Salt crystals form in deserts due to the massive evaporation of water. Deserts, with their dry and hot climate, are perfect for this phenomenon. When...

Read full answer

Explain why natural hot spring water is often rich in minerals?

Explain why natural hot spring water is often rich in minerals?

Thermal springs often originate in volcanic areas or regions where tectonic plates meet. These locations are rich in geothermal activity. Rainwater or river water seeps...

Read full answer

Explain why is Mount Everest nicknamed the roof of the world?

Explain why is Mount Everest nicknamed the "roof of the world"?

May 29, 1953, a date to be marked with a white stone. Sir Edmund Hillary from New Zealand and Tenzing Norgay, a Nepalese Sherpa, were...

Read full answer

Explain why limestone caves often have underground rivers.

Explain why limestone caves often have underground rivers.

Limestone is a sedimentary rock primarily composed of calcium carbonate. Due to its origin, it is often very porous. What is porosity? Like a sponge, it's the...

Read full answer

Explain why some volcanoes form underwater?

Explain why some volcanoes form underwater?

Tectonic plates are enormous pieces of the Earth's crust that constantly move. Beneath the ocean, these plates shift, move apart, or collide. When they move...

Read full answer

Explain why can some lakes transform into lava lakes?

Explain why can some lakes transform into "lava lakes"?

Beneath the Earth's crust, magma accumulates under pressure. When the pressure becomes too great, the magma seeks to rise to the surface. In some cases, it finds...

Read full answer

April 2, 2025 : We have reached 240M+ (millions) GIFs viewed on Giphy (check here!). Use our GIFs on WhatsApp or elsewhere. We are gradually offering them on Tenor. This may take a little time.