with the warmer substance moving upward and the cooler substance moving downward. A good example of convection is a room that contains a wood-burning stove. As the stove heats the air around it,
Most of Earth's heat is stored in the mantle, Marone says, and there are four sources that keep it hot. First, there's the heat left over from when gravity first condensed a planet from the cloud of hot gases and particles in pre-Earth space. As the molten ball cooled, some 4 bill...
Magmain the Earth's mantle moves in convection currents. The hot core heats the material above it, causing it to rise toward the crust, where it cools. The heat comes from the intense pressure on the rock, combined with the energy released from the naturalradioactive decayof elements. The ...
If it reaches the surface, the point at which we call it lava, it cools quickly to form extrusive igneous rocks.Answer and Explanation: Magma, the liquefied rock found below the surface of the Earth, stays hot for several reasons. If it is close enough to the mantle of the Earth, it....
greenhouse gasses. When these compounds absorb the infrared radiation from the surface, the atmosphere heats up. The energy reflected back toward the earth warms the surface further, causing the earth to emit more infrared radiation. This creates a cycle that keeps the atmosphere and the surface ...
Scientists Find Life In a Permanently Frozen Lake Life Can Evolve in Many Directions—Even Backwards ‘Conan the Bacterium’ Can Defy Radiation. Earth’s First Life May Have Come From Hot Springs Earth’s Hidden Eighth Continent Is No Longer Lost ...
Meteorite is a rock from space. It starts as a chunk of a larger object, like an asteroid or comet, that breaks apart. When a piece falls towards Earth, the friction with our atmosphere heats it up, making it glow and often burning most of it away. This glowing streak of light is ...
Sunlight shines through the atmosphere and warms the planet's surface, which then emits terrestrial radiation that heats the air. If sufficient ash from burning cities and forests ascended into the sky, it could effectively work as an umbrella, shielding large portions of the Earth from the sun...
or if the fluid is boiling out of the engine then you have a problem. Cars equipped with engine cooling systems that are designed in a way that the engine should not overheat at all. Like this article says, the engine is going to get hot, but when it overheats your engine is in dan...
diamond anvil cell squeezes tiny samples of material between two diamonds, mimicking the extreme pressures of the Earth’s interior in the lab. The laser heats the materials to necessary core temperatures. Using this kind of lab-based mimicry, the team could study how the core propagates heat...