When a volcano erupts, it sends out bits of rock, lava (solidified magma) and ash into the air. Then, gravity pulls the debris towards the ground so the debris drop, or fall, from the air.
tephra, or debris from the eruption of a volcano:)
igneous rocks are made of solidified lava.
Once molten rock has erupted and solidified, it is called lava.
Solidified lava is known as igneous rock, specifically basalt or obsidian depending on its mineral composition and cooling rate. It forms when molten lava from a volcano cools and solidifies, either on the surface or underground, creating unique textures and structures like vesicles or crystals.
The common usage of "lava rock" in the USA refers to a black rock with a number of visible bubbles or air pockets that is formed from cooled lava on the surface. Although lava rock is an igneous rock, it is not the same as the definition for the word igneous, which can also include igneous rocks which have solidified from magma below the surface.
tephra and ash bombs
When a volcano erupts, it sends out bits of rock, lava (solidified magma) and ash into the air. Then, gravity pulls the debris towards the ground so the debris drop, or fall, from the air.
Ash
tephra, or debris from the eruption of a volcano:)
Igneous rock is formed from solidified and cooled magma or lava.
igneous rocks are made of solidified lava.
Solidified magma or lava is igneous rock.
Solidified magma or lava.
Once molten rock has erupted and solidified, it is called lava.
Basalt, the extrusive igneous rock that comprises most of the oceanic crust, is the most common type of solidified lava.
Pumis (lava rock) can be used in liquid soaps to remove grease and oils.
Solidified lava is known as igneous rock, specifically basalt or obsidian depending on its mineral composition and cooling rate. It forms when molten lava from a volcano cools and solidifies, either on the surface or underground, creating unique textures and structures like vesicles or crystals.