Which observation do geologists use to identify silica content in a rock?, Color, Size, Rocks are described as being made of:, A) Pure chemicals, B) Mixtures of minerals, What type of rock is formed when magma hardens beneath Earth's surface?, A) Intrusive, B) Extrusive, Which rock is the most common extrusive rock in the oceanic crust?, A) Granite, B) Basalt, Sedimentary rocks often form from the remains of:, A) Magma, B) Plants and animals, Which type of rock is specifically known as "changed" rock?, A) Metamorphic, B) Igneous, Metamorphic rocks typically form:, A) On the surface, B) Deep inside Earth.

Rocks HW

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