Type of rocks

Types of rocks

by Kevin Khvan-San

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​https://www.youtube.com/watch?v=ty2Za-O9h6w

Open Ended

Where are rocks located?

​What are rocks?

• Rocks are solid chunks of one or more minerals

Multiple Choice

Rocks are usually 

• Liquid

• Gas

• Solid

​Example of a rock made of multiple minerals

• ​Granite (Made of quartz, feldspar and mica)

​Example of a rock made of only one mineral

• ​Chalk (made of calcite)

​3 categories of rocks

• ​Igneous

• ​Sedimentary

• ​Metamorphic

​Igneous rock

• Igneous rocks are formed when molten rock cools and harden

• ​Molten rock is liquid rock

• ​Molten rock inside the Earth is called magma

• ​Molten rock outside the Earth is called lava

• ​Common place for igneous rocks to form is a volcano

​Igneous rocks (continued)

• ​Igneous rock can form on the Earth's surface (extrusive igneous rocks)

• ​Igneous rock can form below the Earth's surface (intrusive igneous rocks)

​Sedimentary rock

• Rocks that are made up of small particles called sediment

• ​Sediment can come from non living or living organisms

• ​Example of sediment: sand, seashells

• ​Water makes the sedimentary rocks

​Metamorphic rocks

• ​Metamorphic rocks are made when a rock goes through a lot of heat or pressure

• ​They are formed below the Earth's surface

• ​Heat and pressure change the old rock into a new rock

• ​Volcanoes, earthquakes, and movement of tectonic plates are events that can produce metamorphic rocks

• ​All rocks can be transformed into a metamorphic rock