Grain size typically increases by a factor of 2-4 for each texture category. For example, from fine to medium grain size, there is a doubling or quadrupling of grain size. This progression helps geologists classify rocks based on their crystal sizes.
Grain shape.
texture
texture
Extrusive igneous rocks generally have a fine grain texture. This is because they cool quickly on the Earth's surface, causing the minerals to form small crystals.
Sandstone - grain: fine, color: varies (usually tan or brown), texture: rough and grainy, hardness: 6-7 on the Mohs scale. Granite - grain: coarse, color: various (commonly pink, white, or gray), texture: interlocking crystals, hardness: 6-7 on the Mohs scale. Diamond - grain: none (crystalline structure), color: varies (usually colorless), texture: smooth and shiny, hardness: 10 on the Mohs scale.
Medium-grain refers to a category of rice grains that are intermediate in size between short-grain and long-grain rice. Typically, medium-grain rice is about 0.5 to 0.75 inches long and tends to be more moist and tender when cooked, creating a slightly sticky texture. It is commonly used in dishes like risotto and paella, which benefit from its ability to absorb flavors while maintaining a cohesive texture.
fined grain texture
Grain
Grain
Grain shape.
It doesn't. The grain size effects the texture. If a rock has a small grain size, it will have a smooth texture. If the grain size is large, such as pebbles, the texture will be rough. For example, siltstone is one of the smoothest rocks because it contains silt particles, which are .0004cm to .006cm. Conglomerate though contains various particles including cobbles and boulders, which are from 10cm to 100cm.
no
It is in the "non-vegetable" category. Rice is a grain.
The color of the rock is not a major factor that influences the strength of a rock. Factors such as mineral composition, grain size, texture, and porosity play a more significant role in determining a rock's strength.
texture
Because of the gravity ..
Bituminous coal has a smooth texture with a dark color. Its grain is typically fine to medium and can range from a banded appearance due to layering of different materials, to a more homogeneous structure.