Sedimentary Rock Sedimentary rocks form when materials settle into layers and harden. Any rock can become sedimentary if at the surface.
Igneous Rock Igneous rock is a rock that was once melted but has cooled and hardened. Hot lava comes out from within the earth and is an igneous rock once cooled.
4 ways to identify rocks 1.Texture 2.Color 3.Size 4.Hardness
EXPERIMENT TIME!!! You are all now junior geologist. A geologist is someone who studies the Earth. We will test the hardness of rocks using Mohs scale.
Mohs Hardness Scale With your group, test the hardness of rocks and give it a score of 1 to 10. Soft: scratches with fingernail 1 or 2 Medium/Soft: scratches with a penny 3 or 4 Medium/Hard: scratches with a nail 5 or 6 Hard: will not scratch 7 or 8
Mohs Scale Working as a group, make a bar graph with your group rating your rocks from softest to hardest. Be sure your graph is labeled and colorful.
Classify rocks As a group, discuss classifications of your rocks. Remember the 4 ways to classify rocks. 1.Color 2.Size 3.Texture 4.Hardness
What are minerals? Minerals are solid natural made objects that have never been alive. Minerals can be rock-like or metals.
How are rocks and minerals different? Rocks are made up of minerals. Minerals are within all rocks. The minerals in rocks are what makes rocks look different from other rocks.
Rocks and Mineral MineralsRocks Usually very prettyNot pretty Has a shapeNo shape May contain crystalsNo crystals Will not contain fossilsMay contain fossils Color is mostly the sameMay have many colors
Identify the Minerals Time to Play a Game…. How many minerals can you find in the kitchen? (click on refrigerator)