click below
click below
Normal Size Small Size show me how
Quarter 1 Review
| Term | Definition |
|---|---|
| Atmosphere | the blanket of gases that surround our planet |
| Biosphere | all organisms on Earth as well as the environments in which they live |
| Geosphere | the area from the surface of Earth down to its center |
| Hydrosphere | all the water on Earth, including the water in the atmosphere |
| Dependent Variable | factor in an expirement that can change if the independent variable is changed |
| Independent Variable | factor that is manipulated by the expirementer in an expirement |
| Hypothesis | a testable explaination of a situation |
| Scientific Law | is a principle that describes the behavior of a natural phenomenon |
| Scientific Theory | is an explanation based on many observations during repeated investigations |
| Cleavage | describes how a mineral breaks (smoothly) |
| Fracture | describes how a mineral breaks (rough) |
| Hardness | measure of how easily a mineral can be scratched |
| Luster | the way a mineral reflects light (there are two types of luster, metallic and nonmetallic) |
| Streak | the color of a mineral when it is broken up into a powder |
| Fractional Crystallization | process in which different minerals crstallize from magma at different temperatures, removing elements from magma |
| Partial Melting | the process whereby some minerals melt at relatively low temperatures while other minerals remain solid |
| Pegmatite | vein deposites of extremely large-grained minerals that can contain rare ores such as lithium and beryllium |
| Mineral | a naturally occurring, inorganic solid with a specific chemical composition and a definite crystalline structure |
| naturally occurring | not man made |
| inorganic | they are not made from living organisms |
| Solid | it has a definite shapes and volumes |
| specific chemical composition | each type of mineral has a chemical composition unique to that mineral (the majority are made from compounds) |
| definite crystalline structure | a crystal is a solid in which the atoms are arranged in repeating patterns (there is six different crystal shapes) |
| Intrusive | has coarse grains larger than 1 centimeter |
| Extrusive | has fine grains and need magnification to be seen |
| Constants | the variable that can't be changed |
| Controls | standard for comparison in an expirement |
| 2. Compare and contrast mass and weight. | Mass doesn't change but weight can |
| 4. Explain what physical properties could be used to tell the difference between Pyrite (Fool’s Gold) and Gold. | Pyrite leaves a green streak on a porcyline plate, gold leaves gold. |
| 5. Given the harness of two different minerals and explain what would happen if they were rubbed together. | The material that is softer would break or be scratched by the harder material. |
| 6. Explain how igneous rocks form. | Igneous rocks form by magma or lava cooling. |