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Minerals, Rocks, and Fossils. What are rocks made of?. minerals. Minerals are not made by people; they are …. …naturally occurring substances. Name four properties (or clues) that scientists use to identify minerals. Color, luster, streak, and hardness.

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Minerals, Rocks,

and Fossils



Minerals are not made by people; they are …

…naturally occurring substances.


Name four properties (or clues) that scientists use to identify minerals.

Color, luster, streak, and hardness



What words can be used to describe a mineral’s luster? mineral?

Glassy, dull, shiny, greasy


Why is color not a good property to use to identify a mineral?

limestone

slate

Many minerals have the same color.


fingernail, penny, nail mineral?

What are three testers that can be used to determine a mineral’s hardness?




What type of rock is formed when weathering and erosion cause sediments to press together in layers?

Sedimentary


Melted rock below the Earth’s surface is called… cause sediments to press together in layers?

magma.


Small bits and pieces of rocks are called… cause sediments to press together in layers?

sediments.


The breaking down and wearing away of rocks is called… cause sediments to press together in layers?

weathering.




Now that’s old!! called…

10,000 years

How old must a fossil be?



They study them to learn about extinct plants and animals. called…

Why do scientists study fossils?


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