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Answer:
Crystals usually form from molten rock as the molten
rock gradually cools. If the molten rock
cools very rapidly, then either small crystals
form or no crystals form. An example of this
is when lava is ejected from a volcano. If
molten rock cools slowly, then large crystals
can form. This happens usually when the molten
material is very deep in the Earth. Examples
of these types of crystals are diamonds, emeralds,
rubies, etc.
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What affects the size of crystals formed from magma?
The rate at which the magma cools affects the size of the crystals that form. If it cools slowly, large crystals will form. If it cools rapidly, small crystals will form.if it takes the rock a long time to cool down the crystals will be bigger if the rock takes a short time to cool the crystals will be smaller
What causes minerals to form large and small crystals within the same rock?
Recrystallization. Recrystallization is a process whereby small crystals of one mineral will slowly convert to fewer, larger crystals of the same mineral, without melting of the rock.
If a crystal cools rapidly it would be?
Not enough information. Some crystals will break if they cool rapidly, some crystals will not form correctly if the solution cools too quickly.
Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
Do igneous rocks have large crystals?
Yes, they can. Extrusive igneous rocks, which form outside the Earth's surface, often contain small or no crystals, because they cool quickly and the particles in the lava do not have much time to arrange themselves. Intrusive rocks, which form inside the Earth, generally have large crystals because they cool slowly. Granite is an example of an igneous rock with large crystals.
What does lava that cools quickly form?
fast cooling lava -small crystals or no crystals
What lava that cools quickly form?
fast cooling lava -small crystals or no crystals
When lava cools quickly large crystal form?
No. Small crystals form.
How can small sugar crystals be used to form large sugar crystals?
Small crystals act as "seeds" and facilitate the formation of crystal growth, especially in super-saturated solutions.
What is precipitation in the form of small white ice crystals that form inside clouds?
Hail
Do small crystals form when magma cools rapidly?
Small crystals or possibly no crystals at all form from rapidly cooling lava.
Why do you think that quick cooling makes small crystals form?
I think (and know) it is because there is less time for crystals to grow.
What are the conditions which small and large crystals are likely to form?
Large crystals form when a rock cools from magma slowly whereas smaller crystale form when there is a slow rate of cooling
Does lava cool quickly and form minerals with small crystals?
Yes. The faster lava cools, the less time crystals have to form. If the lava cools slowly and has a low viscosity, atoms are able to move around more and form larger crystals.
Why do some igneous rocks have big crystals or grains and some igneous rocks have small crystals or grains?
how long they stayed in the volcano; how much time the crystals had to form
How does crystallization form?
crystals form from molten rock as the molten rock cools. if the molten rock cools very fast then you may have small crystals growing or no crystals at all. if the molten rockk colls slowly then you then you have large crystals growing. this happens when the molten material is deep in the earth. examples of these types of crystals are Rubies, Emeralds, and Diamonds. crystals may also form when water is evaporated. salt crystals are an example as they form when salt water evaporates.
What affects the size of crystals formed from magma?
The rate at which the magma cools affects the size of the crystals that form. If it cools slowly, large crystals will form. If it cools rapidly, small crystals will form.if it takes the rock a long time to cool down the crystals will be bigger if the rock takes a short time to cool the crystals will be smaller
