How is continental crust different from oceanic crust? What are the layers of the Earth's crust? How many layers are in the Earth's crust? How hot is the Earth's mantle? How deep below the Earth's crust is the inner core? Is continental crust thicker than oceanic crust?
in geyser fields in such diverse locales as Iceland, New Zealand, Chile and the U.S. [source:Glennon]. The one thing all of these locations have in common with one another is a high level ofgeothermal activity, one of the key components of geyser formations.Geothermal energy, which is t...
Plate motion requires a hot mantle. And indeed, as you go deeper into the Earth, the temperature increases. At the bottom of the plates, around 60 miles (100 kilometers) deep, the temperature is about 2,400 degreesFahrenheit(1,300 degreesCelsius). By the time you g...
However, volcanoes sometimes erupt in the middle of tectonic plates. The sources of these hotspots might be mantle plumes, mushroom-shaped pillars of hot rock ascending from the deep mantle to sear overlying material like a blowtorch. As tectonic plates wander over such plumes, geologists think ...
Most of Earth's mass is its mantle. The mantle is 84 percent of its volume and nearly 70 percent of its mass. Earth's crust is just 1 percent of its mass, meaning most of Earth's density is toward its center. How did Cavendish calculate the mass of the Earth? Henry Cavendish ...
The temperature on the surface of the crust can be as low as about -80 Celsius but the temperature increases rapidly with depth. Below the crust of the Earth is the mantle that makes up most of the volume of the planet. The rock in the mantle moves slowly due to convention currents ...
One of the many rewarding experiences of drinking tea is the savouring of the flavours in each sip. The true appreciation of the depths of flavour in a tea and how it begins, how it develops and then how it lingers afterwards is a never ending learning e
Under the right conditions, the expansion process kicks in to create hole-punch clouds. How do these holes expand through the cloud layer? This phase change (from supercooled water to ice) produces some latent heat that causes some buoyancy. That bubble of air rises like a hot-air balloon...