click below
click below
Normal Size Small Size show me how
Topic 3 - Rocks etc
Rocks Minerals Resources
| Question | Answer |
|---|---|
| Mineral | Natural, nonliving solid crystals that make up rocks |
| Igneous | rocks that form from molten rock |
| sedimentary | rocks that form when layers of sediment setle on top of one another or harden |
| metamorphic | rocks that have changed as a result of heat and pressure |
| luster | the way the surface of a mineral reflects light |
| hardness | how easily the surface of a mineral can be scratched |
| streak | color of the powder that a mineral leaves when it is scratched across a special plate |
| cleavage | property of minerals to break along smooth flat surfaces |
| erosion | process of carrying away weathered bits of rocks |
| weathering | process of rocks in Earth's crust slowly being broken into smaller pieces |
| landform | natural land feature on Earth's surface |
| renewable resource | resource that can be replaced |
| nonrenewable resource | resource that exists in limited amounts or is used faster than it can be replaced by nature |
| phosphates | chemicals containing the element phosphorous (Florida resource used in fertilizer) |
| limestone | sedimentary rock often used in construction |