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GL Dinosaur Midterm
Midterm Study Stack Thingy
| Question | Answer |
|---|---|
| What kind of texture does igneous rock have when magma cools slowly? | Coarse-grained |
| What is a metamorphic rock in which mineral grains aren't arranged in planes or bands? | A nonfoliated rock. |
| What are tear-shaped bodies that form when magma moves upward? | Pegmatites |
| A mineral that has a shiny surface, does not let light pass through, and is a good conductor of heat and electricity is a... | Metallic Mineral |
| What are the two main types of minerals? | Sillicate and nonsillicate |
| A naturally formed, inorganic substance with a definate crystaline structure? | A MINERAL! |
| The breaking of a mineral along either curved or irregular surfaces | Fracture |
| Which process forms sediment? | Weathering |
| What is the process called in which sedimentary rock are arranged in layers? | Stratification |
| What are strata? | Layers in sedimentary rock |
| Process in which crystals in minerals change in size or composition | Recrystalization |
| Result of the larege pieces of rock deep withing the Earth's crust colliding | Regional Metamorphism |
| A change in the shape of a rock caused by force | Deformation |
| What is a mineral deposit that is large enough and pure enough to be mined? | Ore |
| What is the color of a mineral in powdered form called? | Streak |
| What kinds of mines are open pit and quarry mines? | Surface mines |
| Which mineral is the most resistant to scratching? | DIAMOND!!!!!!!!!!! |
| A material's ________________ is the ratio of mass to volume of a substance. | Density m - V |
| The way a surface reflects light | Luster |
| The special property that causes some minerals to glow under UlTrAvIoLeT LiGhT! :) | Fluorescence!!!!!!!! |
| These minerals are formed when magma moves upward and forms teardrop-shaped bodies called..... | Pegmatites |
| Minerals formed when magma rises towards the crust, but stops before it hits the surface. | plutons |
| a mineral composed of only one element is a... | native element |
| _______________ Sedimentary rock forms when rock or mineral fragments called clasts are cemented together | Clastic Sedimentary Rock |
| _______________ Sedimentary rock forms when minerals crystallize out of a solution to become rock. | Chemical Sedimentary Rock |
| Rock formed from the cooling and solidification of magma beneath the earth's surface is called | instrusive igneous rock |
| This forms in metamorphic rock. | Garnet |
| Metamorphism occurs when ___________ and____________ inside the Earths crust change. | Tempurature and pressure. |
| What are the 2 types of Metamorphism | Contact and regional |
| The process by which wind, water, ice, or gravity transports soil and sediment from one location to another | erosion |
| Index minerals are used to estimate the __________, __________, and __________ at which a rock undergoes metamorphism | Temperature, depth, pressure |
| The process by which minerals are laid down | deposition |
| The quality of a rock that is based on the sizes, shapes, or the positions of the rock's grains | texture |
| parent isotopes are _____________ before they go through radioactive decay | unstable |
| After potassium undergoes radioactive decay, it forms ______________. | Argon |
| Three ways magma can form are: | When rock is heated, when pressure is released, and when rock changes its composition |
| potassium-argon method is used to date rocks older than ________ years | 100,000 |
| 4 processes that change rock inside the Earth are | Heating, Cooling, metamorphism, and compaction |
| Uranium-Lead method can be used to date rocks older than ____________ years | 10 million |
| Paleontology is.... | the scientific study of rocks |
| What is A method of finding out the exact age of an event or object? | Absolute dating |
| Name 2 ways unconformities are created. | Erosion and nondeposition |
| What is the largest division of geological time? | eon |
| What is the formula of density? | m / v (or, mass over volume) |
| what are 4 ways rock layers can become disturbed? | Tilting, Folding, Fault, Intrusion |
| what are the 3 factors that effect the formation of magme? | Tempurature, Composition, PRESSURE |
| when a layer of rock is missing in the geologic column, it is called a _____________. | disconformaty. |
| the fossils of frogs, lizzards, and insects are often found in_______. | amber. |
| The most common element in the Earths crust is _____________. | silicon |
| do ice and water have the same density? | yes. |
| what kind of sedimentary rock is made from fossils? | organic |
| What do paleobotanists sutdy? | Flowers |
| What is the difference between surface mining and sub-surface mining? | Surface mining occurs near the surface or the Earth, sub-surface mining is deep beneath the Earth. |
Created by:
grace.dance.99
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