Natural diamonds form as carbon crystallizes within rock. This process takes place without the help of humans in a variety of places.

Which rule does diamond-formation follow?

____________ is when a mineral breaks in a jagged, irregular manner

____________ is when a mineral breaks along flat surfaces

Which statement describes the relationship between minerals and rocks?

Igneous rocks that form when lava erupts or flows onto Earth's surface are

Igneous rocks that form when magma hardens under Earth's surface are

Which extrusive igneous rocks forms much of the ocean floor?

This extrusive igneous rock is glassy and has little to no crystal structure

When crystals cool QUICKLY, they form a _______________ texture

When crystals cool SLOWLY, they form a ______________ texture

When we look at the sizes of crystal grains in a rock like Granite, they can be described as large as easily visible. What do we call this classification for Igneous rocks?

When an igneous rock cools quickly from lava, forming small crystals with a fine-grained texture it is a(n)

When magma underground cools slowly, coarse-grained igneous rocks from with _________ crystals.

A light, holey, extrusive igneous rock that can float on water is ____________. It can also be crushed up and used for cleaning, polishing, or scrubbing your feet.

When magma has a high silica content, the rocks can be ______________, like the basic rock that makes up formations like Stone Mountain and Mount Rushmore.

Taylor found a DARK colored rock on the beach in Hawaii near a volcano site she was exploring. Because of the color and location of the rock, she knows the silica content of this rock is most likely

If you were to hike to the top of Stone Mountain, you would be standing on what igneous rock?