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Eart Science PG. 1,2

Rocks, Water Cycle, Mass Wasting

What are amorphous igneous rocks? Igneous rocks with a structure of an unordered pattern of ions that form from instant cooling are called amorphous. Ex. glass
What are porphyritic igneous rocks? Porphyritic igneous rocks have large crystals (from slow cooling) and small crystals (from quick cooling) mixed together.
What is regional metamorphism? Regional metamorphism is when igneous/sedimentary rocks become metamorphic under intense pressure.
What is contact metamorphism? Contact metamorphism is when metamorphic rocks are formed with heat by being near magma.
What is low grade and high grade metamorphism? Low grade happens at low temperatures. Ex. shale to slate High grade happen at high temperatures. Ex. fossil to rock
What is Bowen's reaction series? When a formed mineral reacts with remaining magma, it produces a new mineral. Ex. calcium rich magma forms feldspar with react with sodium in magma to cool and become quarts.
What is the largest single body of freshwater? Caspian Sea in Asia
Wha is the largest freshwater lack? Lake Baikal in Russia
Explain the dynamics of the water cycle. The average amount of water in the atmosphere remains the same because on land, precipitations exceeds evaporation. On water, evaporation exceeds precipitation.
Created by: goldenflower