Flashcards: 2nd grade earth vocabulary
All 6 terms
Terms | Definitions |
|---|---|
 minerals | a substance found in nature that is not a plant or an animal. |
| igneous rock | fire-made rock |
| sedimentary rock | forms when sand, mud, and pebbles at the bottom of rivers, lakes, and oceans pile up. |
| metamorphic rock | a rock that has changed form through squeezing and heating. |
| soil | made of many different materials including small rocks, sand, minerals, and silt. |
| humus | a material that was once living or was formed by a living thing. |