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earths resources
minerals and rocks
| Question | Answer |
|---|---|
| usually a solid material from the Earth's crust natural and nonliving | mineral |
| rock formed when melted rock material cools | igneous rock |
| rock formed from bits or layers of sediment cemented together | sedimentary rock |
| rock formed from another kind of rock under heat and pressure | metamorphic rock |
| the trace or remains of an organism that lived long ago | fossil |
| harmful or unwanted material that has been added to the environment | pollution |
| this shows how all rocks are related to one another how one rock can change to another it takes millions of years | rock cycle |
| materials from the earth that have useful properties like rocks and minerals | resource |
| color, hardness,luster and streak | properties of minerals |