Rocks
Changing Rocks
Properties of Minerals
100

What are the three types of rocks?

Sedimentary, Metamorphic, and Igneous

100

What is the cycle that allows rocks to change from one type to another?

The rock cycle

100

I'm observing Obsidian. I notice that it feels smooth. What property am I observing?

Texture

200

What type of rock is formed from cooled magma?

Igneous Rock

200

How do pieces of rocks, minerals, and other materials turn into sedimentary rocks?

Through compacting and cementing. Compacting and cementing is a fancy term for "combining".

200

I'm observing Pyrite. I notice that it is shiny and reflects light well. What property am I observing?

Luster

300

What type of rock is formed from layers of of sediment being compacted and cemented over many years?

Sedimentary Rocks

300

How can sedimentary rock turn into metamorphic rock?

Through extreme heat and pressure

300

I'm observing Magnetite. I notice that when I use the streak plate, it's powdered form is black. What property am I observing?

Streak

400

What type of rock is formed by changes in heat, pressure, or both?

Metamorphic Rock

400

How can metamorphic rock turn into igneous rock?

By melting into magma then cooling.

400

I am observing a diamond. I notice that I cannot scratch it with my fingernail. What property am I observing?

Hardness
500

Why doesn't Florida have igneous rocks being formed naturally?

Florida is not close to any volcanoes or fault lines, so we do not have magma near the surface by us.

500

How does weathering and erosion affect the rock cycle?

Weathering and erosion break down particles into smaller sediment. This sediment is then compacted and cemented to become sedimentary rock.

500

I'm observing a mineral while hiking. I notice that it has broken into flat, smooth, surfaces. What property am I observing?

Cleavage

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