Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Rock
| Question | Answer |
|---|---|
| 1. Rocks: | Make up the earth's crust, that are made of a mixture of minerals and other materials |
| 2. Classifying Rocks: | 3 ways of classifying |
| A. Texture: | the look and feel of the rocks surface; the grain: what gives the rock its texture. Grain size, grain shape, grain pattern, no visible grain |
| B. Mineral Composition: | geologists use a microscope to observe the shape and size of the rock’s crystals. |
| C. Origin: | 1. Sedimentary: forms in layers from sediment 2. Igneous: forms from magma or lava 3. Metamorphic: formed deep underground with heat & pressure |
| Igneous Rocks: | formed from intense heat that comes from magma or lava. |
| A. Extrusive Rocks: | igneous rocks formed from lava that erupted onto Earth's surface |
| B. Intrusive Rocks: | igneous rocks formed from magma that hardens beneath Earth's surface. |
| C. Texture: | depends upon the size and shape of the crystals |
| 1. Porphyritic texture: | large crystals surrounded by small crystals, which form when magma cools in two stages. |
| Uses of Igneous Rocks: | Used because they are hard, dense, and durable |
| Basalt: | gravel |
| Pumice: | cleaning and polishing |
| Perlite: | soil mixes |
| Obsidian: | sharp tools |
| Granite: | building materials |
| 1. Sedimentary Rocks: | formed from layers of sediment deposited by water and wind; |
| sediment: | small solid pieces of rock or living things. |
| A. Erosion: wind or water carry sediments | wind or water carry sediments |
| B. Deposition: | when the water or wind stops carrying the sediments |
| C. Compaction: | presses sediments together |
| D. Cementation: | when dissolved minerals and sediment glue together. |
| A. Clastic Rocks: | formed sedimentary rocks are squeezed together, shale, sandstone, conglomerate, and breccia |
| B. Organic Rocks: | formed when layers of plants and animals are deposited in thick layers: coal, and limestone |
| C. Chemical Rocks: | when minerals are dissolved in a solution crystallize |
| 4. Uses of Sedimentary Rocks: | Limestone and sandstone: building materials Coal: fossil fuel |
| 1. Metamorphic Rocks: | formed from heat and pressure deep beneath the earth's surface change sedimentary and igneous rocks into metamorphic |
| A. Grains: | the arrangement of the grains |
| 1. Foliated: | grains arranged in parallel layers or bands |
| 2. Non-foliated: | mineral grains are arranged randomly |
| Uses of Metamorphic Rocks: | Marble: building materials Slate: flooring, roofing, chalkboards |
| A. Limestone | changes to marble |
| B. Sandstone changes to | quartzite |
| C. Shale changes to | slate |
| D. Granite changes to | gneiss |
| The Rock Cycle: | Forces inside the Earth and at the surface of the Earth produce a rock cycle that builds, destroys, and changes the rocks in the crust. |
| A. Sub-ducting Oceanic Plates: | Plate movements (downward) drive the rock cycle by pushing rocks back into the mantle, where they melt and become magma again. |
| B. Colliding Continental Plates: | Plate movement that causes folds, faulting, and uplifting of the crust that move rocks through the rock cycle. |
Created by:
user-2006760