The Earth is the densest planet in the Solar System. This varies according to the part of the planet; for example, the metallic core is denser than the crust. The average density of the Earth is approximately 5.52 grams per cubic centimetre. ...
One of the most surprising facts about the Earth is how we easily forget that what an amazing and interesting planet we live on. As Carl Saganpointed out,“It’s home, it’s us”.It is the only known planet to support an atmosphere with free oxygen, liquid water on the surface, and,...
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Now there are confirmed surveys to measure the unique personalities of chimps which are a product of natural selection.现在已经有了确切的调查去判定黑猩猩的独特性格，这是自然选择的产物。All of this action occurs on the earth's crust where volume only makes up 1% of the earth.所有的这些都发生...
The slight deformation of the crust explains 25 percent to 45 percent of the unusually low gravity; the rest may be explained by a downward drag caused the motion of magma in Earth's mantle (the layer just beneath the crust), researchers reported in the journal Science. 15. The magnetic ...
What will researchers be studying along the mid-ocean ridge? The ocean floor has a huge crack where the earth’s crust is violently created constantly. Magma rises, then cools, pushing aside older crust and leaving younger crust in its wake. It’s called the Mid-Atlantic Ridge, which hosts...
volcano- a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt vent crack,scissure,cleft,crevice,fissure- a long narrow opening eructation,extravasation,eruption- (of volcanos) pouring out fumes or lava (or a deposit so formed) ...
The geosphere includes the Earth's very hot metallic core, the mantle formed of magma, and the rocky crust. How big is the geosphere? The geosphere extends from Earth's rocky surface all the way to its very hot center. It is about 6500 kilometers (4000 miles) deep. Why is the ...
the system – at first glance, at least. Aside from being the only planet that fosters life, Earth is also the planet with the biggest density in the Milky Way. Surely, the density of the core is much bigger than the crust, but the average manages to top even the colossal Jupiter’s...
Volcanoes formed the Galapagos Islands as far back as four million years ago, rising out of the sea over a “hot spot” under the Earth’s crust. Many of the younger islands are still over this spot. During the last 200 years there have been as many as sixty eruptions from active ...