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6 paź 1997 · There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material...
- Rebuilding a Volcano
On October 2, 2004, Mount St. Helens let out a noontime burp...
- Volcanic Sniffing
Quantum-cascade laser may detect impending eruptions. This...
- Moving Mountains
Instead, as hot rock enters and leaves a volcano¿s magma...
- The Secrets of Supervolcanoes
Functioning like a colossal Bunsen burner, this so-called...
- What Causes a Volcano to Erupt, and How Do Scientists Predict Eruptions
Editor’s Note (6/4/18): This story is being re-posted in...
- Earth
As Earth’s Climate Unravels, More Scientists Are Ready to...
- Rebuilding a Volcano
Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of the destructive solar winds and cosmic radiation.
In new research, scientists studying what the conditions at the core should be like found that the center of the Earth is way hotter than we thought—around 1,800 degrees hotter, putting the ...
1 dzień temu · Earth’s outermost, rigid, rocky layer is called the crust. It is composed of low-density, easily melted rocks; the continental crust is predominantly granitic rock ( see granite ), while composition of the oceanic crust corresponds mainly to that of basalt and gabbro .
Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere , a solidified division of Earth 's layers that includes the crust and the upper part of the mantle . [ 1 ]
4 dni temu · Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbor life.
11 cze 2024 · Earth’s core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly solid mantle . The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles).
