Science Topic 5 Test Review

• To identify minerals, you have to identify the luster, streak, color, density, hardness, crystal structure, special properties, and cleavage and fracture
• To identify a type of rock, you have to know the mineral composition, color, texture, and origin.
• Rocks formed by convection are first made when the plates move apart, then the magma moves up to the surface, then the volcanic activity begins, and finally the rocks cool and harden
• The convection process is when the cold water moves downwards, then warms up by the core, then rises back to the surface, cools then the process happens over again.
• Sedimentary rocks are formed by weathering, then transportation, next by deposition, comopaction, and cementation
• the density formula is d=m/v
• Extrusive igneous rocks are formed when magma cools and solidifies.
• Intrusive igneous rock is formed when magma cools UNDERground
• sedimentary rocks formes by when sediments are compressed together overtime by gravity and forms a rock
• metamorphic rocks are formed by another rock from extreme heat and pressure. It can be identified by its forliated strips from the plates tectonic