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R/M/C/S
last test of the year!
Question | Answer |
---|---|
What is the difference between a rock and a mineral? | A rock is made of two or more elements, and sometimes organic. Rocks are made of minerals |
What are the different type of sedimentary rocks? | clastic, Organic, and Chemical |
What are the characteristics of clastic rocks? | made of country rock and mineral grains |
What are the characteristics of organic rock? | made of remains of living organisms or shells |
What are the characteristics of chemical rock? | made of evaporated water minerals |
Why are rocks found more often in Sedimetary rocks? | Sedimentary rocks form near water, where plants and animals live and die |
How are rocks classified? | Igneous, Sedimentary, and Metamorphic |
How do you test a rocks streak? | rub the mineral on a streak plate and look at the color of the powder left behind |
How do you test a rocks hardness? | See if the rock leaves behind a powder on the streak plate? |
How do you test a rocks cleavage/fracture? | Cleavage is when a rock splits on flat planes and into regular shapes, fracture splits into an uneven surface when broken |