1. IDENTIFICATION
INTRUCTION: Answer the following question correctly. Write your answer on the
space provided before the number
2
?
1. The color of the mineral in its powered form is
?
2. Rocks are formed from various solid formation called
3. The smooth planes of weakness that is prone to breakage
4. According to Mohs' Hardness scale the hardest mineral is
5. It is the minerals' resistance to breaking and deforming.
6. According to Mohs' Hardness scale the softest mineral is
?
7. The ability of the mineral to transmit almost all of the light
2.
8. It is the quality of light that is being reflected off by the surface of the mineral.
9. The optical property of a mineral that is easiest to identify yet not reliable
10. The basic unit or the building block of rocks is
?
INTRUCTION: Answer the following question correctly. Write your answer on the
space provided before the number
2
?
1. The color of the mineral in its powered form is
?
2. Rocks are formed from various solid formation called
3. The smooth planes of weakness that is prone to breakage
4. According to Mohs' Hardness scale the hardest mineral is
5. It is the minerals' resistance to breaking and deforming.
6. According to Mohs' Hardness scale the softest mineral is
?
7. The ability of the mineral to transmit almost all of the light
2.
8. It is the quality of light that is being reflected off by the surface of the mineral.
9. The optical property of a mineral that is easiest to identify yet not reliable
10. The basic unit or the building block of rocks is
?
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Answers & Comments
1. Streak
2. Physical Changes
3. Cleavage
4. Diamond
5. Tenacity
6. Talc
7. Light
8. Luster
9. Translucent
10. Minerals
Explanation:
1. Streak, the colour of a mineral in its powdered form. It is usually obtained by rubbing the mineral on a hard, white surface, such as a tile of unglazed porcelain, so as to yield a line, or streak, of fine powder.
2. Extrusive, or volcanic, igneous rocks are formed when molten hot material cools and solidifies. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. The formation of igneous rocks is a physical change, not a chemical change.
3. As minerals are broken (such as with a rock hammer, for example), some may cleave, or break, along smooth flat planes known as cleavage. These flat surfaces are parallel to directions of weakness within the crystal.
4. In 1812, a man named Fredrich Mohs invented a scale of hardness called Mohs Scale which is still used today. He selected ten standard minerals, and arranged them in order of increasing hardness. Talc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale.
5. Tenacity refers to a mineral's resistance to breaking, bending, or otherwise being deformed. Tenacity is particularly useful in telling some of the metallic minerals apart.
6. Talc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale.
7. The ability to transmit light is another convenient property used in the identification of minerals. Opaque minerals, such as graphite and jasper, cannot transmit light. If both light and an image can be transmitted through a mineral, such as mica, it is said to be transparent.
8. Luster describes the reflection of light off a mineral's surface.
9. Translucent to transparent minerals have a much more varied degree of color due to the presence of trace minerals.
10. Minerals are the building blocks of rocks. Nature cements combinations of minerals together to form rocks. Rocks are catagorized in three general groups according to the way they were formed.
*/I'm not sure about my answer to number 7.
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