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If you scrape a rock with your fingernail and your fingernail leaves a scratch it must be?
Wiki User
∙ 13y ago
Wiki User
∙ 13y ago
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How rocks can be identified by hardness?
The hardness of a rock is identified using Mohs Scale of Hardness. Certain rocks and minerals have a predetermined hardness level based on this scale, which uses the obvious logic that if something scratches something else, then it must be harder than that which it scratches. Likewise, if something doesn't scratch something else, it must be softer than that which it cannot scratch. Using a scale from 1 to 10, common objects can be used to determine hardness level. A fingernail, for example, has a hardness of 2.5. Any rock that can be scratched by a fingernail (talc, for example) has a hardness less than 2.5. A streak plate, which is commonly used for hardness tests, has a hardness of 6.5. Diamonds, the hardest minerals, define the 10 on the hardness scale. Using these common objects and their related hardnesses, one can easily identify the rock in question.
What part of the plant gives off oxygen?
Photosynthesis is the part of a plant that gives off oxygen. Plants must have oxygen in order to live just as they must have water. They must also have light.
Can copper scratch other rocks and minerals?
I would say not likely. Most metals are rather soft in their pure form. One of the most distinguishing characteristics about metals is that they are sectile, or easily cut with a knife. Silver has a hardness (on the Mohs scale) of 3. That is probably not going to scratch many other minerals.
Starting with hate change one letter at a time until you have the word love each change leaves the other letters in their original places and must result in a proper word what is the minimum number?
4
What types of respiration is there for non-vascular plants?
Plants breathe as humans do. Carbon dioxide goes in the leaves and oxygen comes out.
What does it mean if you have itchy breasts?
that you must scratch them.
How do you make a pie from scratch?
If you wish make an apple pie from scratch, you must first invent the universe.
Which mineral on the mohs scale will scratch apatite?
Minerals that will scratch apatite must be more than a 5 on the Moh's hardness scale. So feldspar, quartz, topaz, corundum, and diamond will scratch apatite.
How can you tell gold from other shiny rocks?
you must take scratch card or paper or something and scratch it. if it is gray, gold, or something like that, its gold
Is leaves considered matter?
Leaves can be seen and touched, so must be considered as matter.
How rocks can be identified by hardness?
The hardness of a rock is identified using Mohs Scale of Hardness. Certain rocks and minerals have a predetermined hardness level based on this scale, which uses the obvious logic that if something scratches something else, then it must be harder than that which it scratches. Likewise, if something doesn't scratch something else, it must be softer than that which it cannot scratch. Using a scale from 1 to 10, common objects can be used to determine hardness level. A fingernail, for example, has a hardness of 2.5. Any rock that can be scratched by a fingernail (talc, for example) has a hardness less than 2.5. A streak plate, which is commonly used for hardness tests, has a hardness of 6.5. Diamonds, the hardest minerals, define the 10 on the hardness scale. Using these common objects and their related hardnesses, one can easily identify the rock in question.
How would one scratch vinyl records on plastic decks?
In order to begin to scratch vinyl records one must purchase a turntable in order to edit the record. One must also learn professional DJ lessons, and music theory.
Why is neon lights mean to vinyl scratch?
The answer is because its just a thing boys do. They pick on the girls because they like them. So Neon Lights must have a crush on this Vinyl Scratch.
The purple leaves on your wandering Jew have turned green What must you do to get the purple leaves back?
more sunlight
How come guitar hero keeps saying the game disc could not be read?
There must be a scratch on the disc.
Italy to Portugal a ship must pass through what narrow outlet as it leaves the Mediterranean sea?
Italy to Portugal a ship must pass through what narrow outlet as it leaves the Mediterranean sea?
What must a baby blue jay do by the time it born and the time its leaves its parents?
Must be fed by the mother bird
