 | Term | Definition |
| |
Magma |
Molten Rock |
| |
Bedrock |
solid, unmovable rock below the soil |
| |
Geode |
hard, rocklike object which looks like a mudball and has cyrtals inside |
| |
Petroleum/Crude Oil |
Oil in its natural state |
| |
Old Faithful |
a famous geyser in Yellowstone National Park |
| |
Mold |
a fossil formed when the mud that buries a plant or animal quickly hardens around it |
| |
Petrified Fossils |
plant & animal remains that have turned to stone |
| |
Impurities |
where quartz gets its color from |
| |
Uranium |
a radioactive metal |
| |
Weathering |
soil is formed by this process |
| |
Amber |
the hardened sap of certain trees |
| |
Crystal |
a solid that has a definite shape with flat surfaces and sharp edges |
| |
Extinct |
no longer in existence |
| |
Gemstone |
a rare, beautiful mineral that is very hard |
| |
Geologist |
a scientist who studies the structure of the earth |
| |
Humus |
decaying plant and animal material |
