Lava is molten or partially molten rock that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at

Magma that is extruded onto the surface during a volcanic eruption is called lava. Lava cools and solidifies relatively quickly compared to underground bodies of magma. This fast cooling does not allow crystals to grow large, and a part of the melt does not crystallize at all, becoming glass.

4 天之前 · lava, magma (molten rock) emerging as a liquid onto Earth’s surface. The term lava is also used for the solidified rock formed by the cooling of a molten lava flow. The temperatures of molten lava range from about 700 to 1,200 °C (1,300 to 2,200 °F).

2023年8月6日 · Magma and lava are terms that people use interchangeably in everyday conversation, but they are different stages in the life cycle of molten rock. The main difference between magma and lava is that magma is molten rock beneath the Earth’s surface, while lava is molten rock on the surface.

11 小时之前 · HONOLULU -- Lava began bubbling out of Hawaii’s most active volcano once again on Tuesday as Kilauea's sporadic eruption resumed. The eruption restarted at midday when when molten rock began ...

11 小时之前 · Lava began bubbling out of Hawaii’s most active volcano once again on Tuesday as Kilauea's sporadic eruption resumed. The eruption restarted at midday when when molten rock began pouring out of ...

When a volcano erupts, the molten rock (or magma) that comes out of the Earth is called lava. Because lava is so hot (more than 1,100 degrees C, over 2,000 degrees F), it remains molten and flows across the ground until it cools and hardens into rock.

When a volcano erupts, the molten rock (or magma) that comes out of the Earth is called lava. Because lava is so hot (more than 1,100 degrees C, over 2,000 degrees F), it remains molten and flows across the ground until it cools and hardens into rock.

At the heart of every volcanic eruption is lava, the molten rock that makes its dramatic entrance onto the earth’s surface, painting the landscape with its fiery brush. But lava isn’t just a spectacle; it’s a creator and transformer, playing a pivotal role …

10 小时之前 · It's shot tall fountains of lava high into the air and spilled molten rock across the caldera floor each time it’s come back to life. The spectacle is a popular attraction for tourists.