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Is all igneous rock formed from lava that cooled on Earths surface?
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
Which would have larger crystals an igneous rock formed from magma below the surface or igneous rock cooled from lava on the surface?
Crystals are generally formed when magma or molten rock cools and solidifies. Rapid cooling of the molten rock generally results in the formation of small crystals, like when magma reaches the surface. However, if they cool down slowly, then large crystals are formed. Keeping heat applied allows more growth on the crystal over time. In that logic, larger crystals grow underground.
What happens too crystals formation if it is cooled quickly?
If a crystal is cooled quickly, there is less time for the molecules to arrange into a well-defined pattern, leading to smaller crystals or an amorphous structure. This can result in a less organized and less stable crystal lattice compared to slow cooling, which allows for better alignment of molecules and larger crystal formation.
Do rocks that cool slowly from magma contain more crystals?
Yes, rocks that cool slowly from magma have more time for crystals to grow, resulting in a coarse-grained texture with larger crystals. In contrast, rocks that cool rapidly have a fine-grained texture with smaller crystals due to the lack of time for crystal growth.
There are different sizes of these in different igneous rocks?
Well, honey, those are crystals we're talking about. Igneous rocks can have different crystal sizes depending on how fast they cool. So, if you see some big crystals in a rock, it probably cooled slowly, and if you see tiny crystals, it cooled quickly. It's like a rock's own little time capsule of its formation process.
What is the difference in appearance between igneous rocks that have cooled slowly and igneous rocks that have cooled quickly?
Igneous rocks that cooled slowly are intrusive. Igneous rocks that cooled quickly are extrusive. Intrusive rocks form larger crystals, because the crystals have a longer time to grow. Extrusive rocks have small to no crystals, because they had little or no time to grow/form.
Why would granite have larger crystals than igneous rocks formed from lava cooled above earths surface?
I think igneous rock have a larger crystal than all the others because igneous rock is all the way at the bottom of earth surface and it keeps cool of or hot at the same time.
How does the rate of cooling influence crystal size of igneous rocks and how does that help you to distinguish between intrusive and extrusive igneous rocks?
The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).
Is igneous rock that cooled above ground larger then being cooled under ground?
no
How is the texture of an igneous rock related to the rate which it cooled?
Quick cooling of magma results in small crystal formation. Slow cooling magma results in larger crystals.
What does crystal size mean?
Crystal size refers to the dimensions of individual crystals within a substance or material. It correlates with the rate of cooling or solidification during the formation process, with slower cooling resulting in larger crystals. Crystal size can impact the physical properties and characteristics of a material, such as strength, durability, and transparency.
What does an igneous rock's crystal grain size indicate to the observer?
The size of the mineral crystals in an igneous rock is related to the rate of time spent in cooling from magma. Longer exposure to the crystallization temperature means larger crystals. Less time means smaller crystals, or in the case of obsidian, which cools extremely quickly, no crystallization.
What determines how large the crystals in an igneous rock will be?
The cooling rate of magma determines the size of crystals in an igneous rock. Slow cooling allows larger crystals to form, while rapid cooling results in smaller crystals or a glassy texture. Other factors such as mineral composition and amount of available space for crystal growth also influence crystal size.
Is all igneous rock formed from lava that cooled on Earths surface?
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
Which would have larger crystals an igneous rock formed from magma below the surface or igneous rock cooled from lava on the surface?
Crystals are generally formed when magma or molten rock cools and solidifies. Rapid cooling of the molten rock generally results in the formation of small crystals, like when magma reaches the surface. However, if they cool down slowly, then large crystals are formed. Keeping heat applied allows more growth on the crystal over time. In that logic, larger crystals grow underground.
What is the name of igneous rocks that have large crystals and small crystals?
Large Crystals = Intrusive Small Crystals = Extrusive The name relates to where the minerals were cooled (at at what rate). In the case of intrusive igneous, the rocks were formed above Earth's surface and were thus cooled quickly and the minerals had little time to become defined. Extrusive rocks, therefore, were formed within the Earth's mantle and had a much longer time before being gathered to cool (as they slowly rose to the top).
What does the presence of tiny crystals in a piece of igneous rock tell you about it?
The presence of tiny crystals in igneous rock indicates that the rock cooled quickly, resulting in the formation of small crystals. This suggests that the rock likely formed near or at the Earth's surface, like in a volcanic eruption. Rocks with larger crystals usually form deeper underground where cooling is slower.
