This is Mohs hardness scale.

What is the relationship between the rate at which molten material cools and a mineral's crystals?
Which statement describes the location of an earthquake’s epicenter?
Which is one of the main categories of sedimentary rocks?
Which type of metamorphic rock has randomly arranged grains and does not split into layers?
Which is one source of the sediments that form sedimentary rocks?
Which two processes are destructive forces that occur during sedimentary rock formation?
Which example is most likely made from both metals and gemstones?
Which statement is an example of an observation a scientist would make to classify a rock?
Which statement describes divergent boundaries?
Which word identifies the agent that carries the energy released from earthquakes?
Study the image of this rock.

Which correctly lists three characteristics of minerals?
Which sedimentary rock is burned to produce energy?
Which word identifies the shaking that results from movement under Earth’s surface?
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