Tuesday, November 6, 2012
Saturday, November 3, 2012
The Rack cycle
The rock cycle is the process that
take a long time. The magma happen by the force of gases through a mountain,
which is mostly referred as Volcano. when magma comes out of the volcano, it's called
lava. Because of the different temperature , the lava solidifies and become
solid. And became a Igneous rock. Igneous rock can be of two types, intrusive
that has big crystals and extrusive that have small crystals. That affected by
weathering and erosion, the rocks break down to small sediments. Then sediments
come through processes that called compaction and cementation, Then
became a a Sedimentary rock. The rocks made up of three types , clastic
that is formed by cold lava, bioclastic that is formed by death organisms.The
Metamorphic rock is formed by heat and pressure of other rocks. This how the
rock cycle keeps working.
The following is a listing of the minerals of the Mohs scale and their rating:
The following physical properties of minerals can be easily used to identify a mineral:
Luster: Metallic - look like mineral the non- Metallic does not look like mineral
Color: What the mineral look like
Streak: The powder that left by the mineral
Hardness : How hard the mineral is from (1) to (10)
Cleavage: Mineral that is cut easy
Fracture: Mineral that break uneven
Composition: what the mineral made of
Other properties: the description of the mineral smooth, rough , shining , sparkles clear
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