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RM mid-terms 1
mid-terms SRB
| Question | Answer |
|---|---|
| How much geologic time do the layers of rock exposed at Grand Canyon National Park represent. | 2 billion years |
| How many years of Earth's history do geologists study? | 4.6 billion years |
| What is a naturally formed, inorganic solid that has a definite crystalline structure? | Mineral |
| What is a pure substance that cannot be broken down into simpler substances by chemicals? | An Element |
| What is a substance made of two or more elements that have been chemically joined? | Compound |
| What is a solid whose atoms, ions, or molecules are arranged in a definite pattern? | A crystal |
| What is a mineral that contains a combination of silicon, oxygen, and one or more metals? | A silicate mineral |
| What is a mineral that does not contain compounds of silicon and oxygen? | A nonsilicate mineral |
| What is the way in which a mineral reflects light? | luster |
| What is the color of the powder of a mineral? | Streak |
| What is the splitting of a mineral along smooth, falt surfaces? | Cleavage |
| What is the manner in which a mineral breaks along either curved of irregular surface? | Fracture |
| A measure of the ability of a mineral to resist scratching? | Hardness |
| What is the ratio of the mass of a substance to the volume of the substance? | Density |
| What is a natural material whose concentration of economically valuable minerals in high enough? | Ore |
| What is the process of returning land to it's original condition after mining is completed? | reclamation |
| What is the largest formations of igneous rock? | Batholiths |
| What is the eon during which the earliest known rocks formed on Earth? | Archean |
| what is the eon in which we live? | Phanerozoic |
| what is the eon in which scientists have found rocks and meteorites only from the moon? | Hadean |
| What is the eon in which the first organisms with well-developed cells appeared? | Proterozoic |
| What do the boundaries between geologic time intervals represent? | Shorter intervals |
| What is a missing layer of rock? | Disconformity |
| What is a process that forms sediment? | Weathering? |
| What are strata? | Layers in Sedimentary rock |
| What kind of sedimentary rock is made from dissoled minerals? | Chemical |
| what kind of sedimentary rock is made from fossils? | Organic |
| If a mineral is shiny what kind of luster is it? | Metallic |
| If a mineral is dull, but reflective what kind of luster is it? | Submetallic |
| If a mineral is dull and not reflective what kind of mineral is it? | Nonmetallic |
| What is a nonsilicate mineral? | Gypsum |
| What is radioactivity and fluorescence? | Special Properties of Minerals |
| What special property contains radium? | Radioactivity |
| What is the process of returning land to its original condition after mining is completed | Reclamation |
| What is a precious or semi-precious used in jewelry? | Gemstones |
| What is the smallest part of an element that has all the properties of that element? | An atom |
| What is a solid whose atoms, ions, or molecules are arranged in a definite pattern? | A crystal |
| What is a mineral that is composed of only one element? | A native element |
| What silicate mineral is the main component of most of Earth's rocks? | Feldspar |
| Which silicate mineral separate easily into sheets when they break? | Mica |
| What silicate mineral is the basic building block of many rocks? | Quartz |
| What is a mineral that contains sulfur and oxygen? | Sulfates |
| What are minerals that contain one or more elements like lead or iron combined with sulfur? | Sulfides |
| What is a mineral that contains carbon and oxygen? | Carbonates |
| What is a mineral that forms when an element such as aluminum or iron combine with oxygen? | Oxides |
| What are minerals that are compounds containing fluorine, chlorine, iodine, or bromine? | Halides |
| What is the special property of calcite and fluorite that causes them to glow under ultraviolet light? | Fluorescense |
| What is a thin clear piece that when you look through it the picture changes? | Optical Properties |
| What is a reaction that bubbles or fizzes? | Chemical reaction |
| What is a special property of pyrrhotite is that attracts iron? | magnetism |
| What is a special property that makes something seem salty? | Taste |
| What is a mineral that forms only in metamorphic rock at certain temperatures and pressures? | Index Minerals |
| What is a naturally occurring solid mixture of one or more minerals or organic matter? | Rock |
| What is the continual process by which new rock forms from old rock? | The Rock Cycle |
| What is the process by which sediment is removed from its source called? | Erosion |
| What is the process in which material is laid down? | Deposition |
| What is the chemical make-up of a roc? | Composition |
| What is the quality of a rock that is based on the sizes, shapes, and positions on the rock's grains? | Texture |
| What is the rock that is formed from cooled igneous rock? | Igneous Rock |
| What type of igneous rock forms below the Earth's surface? | Intrusive |
| What type of igneous rock forms above the Earth's surface? | Extrusive |
| What type of intrusive rock forms in sheets across other formed rocks? | Dikes |
| What type of igneous rock are sheet-like but are oriented parallel to previous formed areas? | Sills |
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RcMc
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