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Obsidian and Pāhoehoe lava
Rubye Mante
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What rocks are formed by fast cooling magma?
igneous rocks
What type of rock that forms from magma or lava is rock?
Igneous rock is formed from the cooling of magma or lava.
What are the igneous rocks that are formed by fast-cooling lava?
Extrusive
What type of rock is?
There are three major types of rocks: igneous, metamorphic, and sedimentary. Rocks are classified based on the process by which they were formed. Sedimentary rocks form from sand, dust, and tiny rock particles that are fused by water and extreme pressure over time. Igneous rocks form from cooled magma or lava; depending on how fast they were cooled and solidified, igneous rocks may or may not go through crystallization. Metamorphic rocks are rocks that changed from either sedimentary rocks, igneous ones, or other metamorphic rocks. These generally form from wind, water, or chemical erosion.
Why is a igneous rock appear smooth and glassy?
Some igneous rocks are very smooth and glassy (obsidian) while others have a very rough texture, such as the rocks used on the bottom of a propane gas grill. They are all formed from lava, but the glassy rocks cooled so fast that crystals did not have a chance to form. The rougher rocks cooled more slowly, allowing larger crystals to form--Slower cooling = larger crystals = rougher texture.
What determines how large the crystals in an igneous rock will be?
How fast the magma or lava cooled. How fast the rock cooled
What determines how large the crystals in the igneous rock will be?
How fast the magma or lava cooled. How fast the rock cooled
Which igneous rocks are fine grained to due to fast cooling?
Extrusive igneous rocks are fine grained due to fast cooling. They cool at a faster rate than most igneous rocks.
What happens when magma is cooled down fast?
It will be an igneous rock
What igneous rock has no visible crystals as a result of rapid cooling?
Obsidian rocks are cooled very fast, and you cannot see the crystals in them.
Igneous rocks can look very different depending on?
Igneous rocks look different depending on how fast the magma cools.
What 2 igneous are formed by fast cooling lava?
Rock and igneous plants
