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Eart Science PG. 1,2
Rocks, Water Cycle, Mass Wasting
Question | Answer |
---|---|
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. |