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Igneous Rocks are formed. Obsidian is a volcanic glass, go to wikepidiea and search "list of rocks" and it will come up with all the different igneous, metamorphic, and sedimentary rocks and what they are.
What else can I help you with?
How does hot lava cool and harden?
Lava cools as anything else does; it loses heat to cooler surroundings. As it cools its atoms and ions slow down and are eventually locked in place by bonds with neighboring atoms an ions. The lava is essentially freezing.
When melted rock cools or hardens on or under earths surface it forms what kind of rock?
It forms an igneous rock. If it is within the Earth, then it is an intrusive igneous rock (e.g. granite) and if it is erupted onto Earth's surface then it is an extrusive igneous rock (e.g. basalt).
What kind of rock makes up most of the igneous rock?
Most igneous rocks are made up of silicate minerals, such as quartz, feldspar, mica, amphibole, and pyroxene. These minerals are rich in silicon and oxygen and form the bulk of the composition of igneous rocks.
What kind of rock forms when magna cools and solidefies in the Earth?
It depends on the composition of the magma, how quickly it cools and crystalises, the temperature and pressure of the original melt.
What kind of rocks are formed when the magma cools beneath earth's surface?
Intrusive igneous rock.
What kind of rock is formed when magma or lava cools and hardens?
Igneous rock is formed.
When lava explodes from a volcano and cools and hardens quickly, what kind of rock does it form from?
igneus rock
What type rock forms when magma cools and hardens?
Igneous rock forms when magma cools and hardens. This type of rock can be classified as intrusive (plutonic) if it cools below the Earth's surface (slow cooling) or extrusive (volcanic) if it cools quickly on the Earth's surface. Examples of igneous rocks include granite, basalt, and obsidian.
What does extrusive rock means?
Extrusive igneous rock is one of two different types of igneous rocks. The other kind is intrusive igneous rock. Intrusive igneous rock is formed when magma in Earth's lithosphere cools and hardens. Extrusive igneous rock is formed when lava on Earth's surface cools and hardens.
How does hot lava cool and harden?
Lava cools as anything else does; it loses heat to cooler surroundings. As it cools its atoms and ions slow down and are eventually locked in place by bonds with neighboring atoms an ions. The lava is essentially freezing.
What kind of rock from melted rock that hardens?
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What kind of lava hardens to form chunks?
It is called aa
What kind of rock forms when magma or lava cool and hardens?
Igneous rocks
What kind of mineral does magma form when it cools?
When magma cools, it forms igneous rock.
When melted rock cools or hardens on or under earths surface it forms what kind of rock?
It forms an igneous rock. If it is within the Earth, then it is an intrusive igneous rock (e.g. granite) and if it is erupted onto Earth's surface then it is an extrusive igneous rock (e.g. basalt).
What kind of energy cools your home in the summer?
electric
What kind of cloud formations will you see during flood?
cirrus clouds
