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You would examine a fracture surface of the rock. Intrusive igneous rocks that have cooled very slowly underground have visible crystals and are said to have a phaneritic texture. Granite is an example of this type of rock. Extrusive igneous rocks that have cooled quickly from lava above or on the surface generally will have crystals too small to be visible with the naked eye, in a texture that is referred to as aphanitic. Obsidian is an example of this type of rock.
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∙ 14y ago
Wiki User
∙ 12y agoRocks that are made inside the earth (intrusive rocks) cool down and form slower because the magma doesn't really cool down at all because it it close to the core of the earth. Extrusive rocks though, cool quickest due to lava cooling faster above the ground.
Wiki User
∙ 9y agoSlow cooling produces large grains, fast cooling produces fine-grains in the rock.
Wiki User
∙ 9y agoThe slower the cooling the larger the grains in the rock.
Wiki User
∙ 11y agoyou can tell by looking at the rings in the cooling stage in the rock
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Can sizes of crystals in sedimentary rock tell us how quickly the lava or magma cooled that formed the rock?
Yes it can.
How can you tell that the particles in a cup of water are moving slower or faster?
hot water has fast moving particles, and cold water has slow moving particles
What does crystal size tell us about the formation of the minral?
Whether it was fast crystallization - smaller Crystals or slow crystallization - bigger and finer Crystal forms!
A rock's position within rock layers can tell its?
imprint
How do you tell how old a rock engraving is?
with your eyes
What do the large crystals in this igneous rock tell about the rock?
That it cooled very slowly.
What do the large crystals in igneous rocks tell about the rock?
That it cooled very slowly.
Can sizes of crystals in sedimentary rock tell us how quickly the lava or magma cooled that formed the rock?
Yes it can.
Am I slow at racing?
Kindly provide me with your speed for me to tell you whether you are fast or slow at racing.
What does the presence of tiny crystals in a piece of igneous rock tell you about it?
Tiny crystals in the igneous rock tells you it cooled quickley.
What does the presence of large crystals tell you about the rock's formation?
It cooled slowly, forming larger crystals.
What are some examples of rocks cooled quickly?
Two examples that come to my mind right away are Basalt and Obsidian. You can tell on your own if a rock has cooled quickly by whether or not you can see individual grains of minerals within the rock. So if you cant see any, then its most likely that the rock cooled quickly.
Why do car ads tell how fast a car accelerates but seldom mention velocity?
The speed would be slow and if it was fast.
When a teenage boy moves too fast what do you do?
just tell him, just ask him to slow it down if you are uncomfortable :)
What means the prefix brady?
As far as I can tell, the prefix "brady" means slow. Contrast, ror instance, bradyphagia to tachyphagia. (Slow eating and fast eating)
What do you check for in taking a pulse?
You are feeling the heart rate. It call tell you if the person is even alive. It can tell how fast or slow the heart is beating. It can tell you how hard the heart is beating.
How do you tell your boyfriend you don't want to kiss him?
just tell him you want to take it slow because you like him and dont want to ruin your relationship by moving to fast
