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Minerals & Rocks
Using Earth's Resources
| Question | Answer |
|---|---|
| Rock | Nonliving material made out of one or more minerals |
| Sediment | Tiny bits of weathered rock or once-living animals or plants |
| Igneous Rock | A rock forms when melted rock cools and hardens |
| Minerals | Rocks are made of solid, nonliving materials |
| Sedimentary Rock | A kind of rock that forms from layers of sediment |
| Metamorphic Rock | A kind of rock that has been changed by heating and squeezing |
| Lava forms rocks with | small mineral grains |
| Lava flows | on the earth's surface |
| Magma forms rocks with | large mineral grains |
| Magma is | inside the earth |
| Luster | Describes how light bounces off a mineral |
| Streak | The color of the powder left when a mineral is rubbed across a white tile |
| Hardness | How easily a mineral can be scratched |
| Color | Most minerals come in just one color (quartz comes in many colors) |