Lesson Today on Rocks and Minerals
| Rocks |
|---|
| Igneous - formed from fire |
| Sedimentary - formed in layers |
| Metamorphic - formed from pressure |
| Rocks are mixtures and have no definite chemical composition |
| Rocks are made up of minerals |
| Minerals |
|---|
| Minerals are pure substances and are made up of elements |
| Minerals have chemical formulas, which means they form in definite ratios |
| Minerals form crystals |
| You can use the Mohs Hardness scale and a streak test to identify a mineral |
Samples to show.
Great to use the Smart Board!
We had 8 different samples for the students to identify. The students labeled their boxes and picked out their samples.
The finished box with warning label: Keep away from small children. Do not place rocks and minerals in your mouth!