How much oxygen is in the Earth's crust? What is the temperature of the Earth's crust? How hot is the oceanic crust? How thick is the crust of the Tibetan Plateau? How thick is the hydrosphere? How deep is the lithosphere? The crust is a few miles thick, yet we cannot dig through...
refuted the belief that biological processes require not only liquid water but sunlight as well, thus greatly enhancing the possibility of life beyond Earth.Take Jupiter’s moon Europa. Space probes show a body covered with a thick layer ...
Layers of the Earth: There are three layers of the Earth. There is the crust (the top level), the mantle in the middle, and the core at the very center of the Earth. The layers have different levels of pressure that influence the material in each layer. ...
A book is 7.5 inches long. How many centimeters long is the book? Imperial to Metric Conversions: The metric system of measurements is used by every country in the world except for the United States. As such, regular conversions between the metric and imperial systems are necessary, especi...
Many observers of Earth’s ancient history–including scientists and aboriginal elders–have noted cycles of cataclysmic change. There are 12 to 13 thousand year cycles involving pole shifts and the Earth’s crust (which is only about 36 miles thick) sliding over the mantle when the Earth’s ...
Mars is a dusty, cold, desert world with a very thin atmosphere. But evidence suggests billions of years ago, Mars was wetter and warmer, and had a thick atmosphere. NASA/JPL-Caltech Since the earliest days of astronomy, people have been fascinated by Mars. Something about the Red Planet...
This makes aluminum the most abundant metal and the third most abundant element in Earth's crust. Only silicon and oxygen are more common than aluminum. The next most common metal after aluminum is iron, followed by magnesium, titanium and manganese. The primary source of aluminum...
These coastal civilizations have long since disappeared under the waves. But new technology is revolutionizing underwater archaeology and surfacing the remains like never before.
When enjoying a sandwich or slice of pizza, many of us even throw the crust in the garbage, right next to the bread loaf heels. But bread and other wheat products -- like pasta and cookies, of course -- have become an important part of many human diets, especially as Earth's ...
Plates are different sizes, with some plates more than 124 miles (200 km) thick [source: Kious]. Below the lithosphere is a fluid layer of rock called the asthenosphere. The plates are rigid slabs almost floating along in the asthenosphere, but scientists still aren't sure what causes the...