Lesson on the Types of Rocks

Types of Rocks

by Angelica Oslacky

​Sedimentary Rocks

• ​made up of smaller sediments

• ​formed through transport and deposition

• ​examples:

  • ​Breccia

​Igneous Rocks

• formed from magma or lava

• ​magma that crystallizes and solidifies becomes an intrusive igneous rock

• ​lava that crystallizes and solidifies becomes an extrusive igneous rock

​obsidian

​Metamorphic Rocks

• ​formed from rocks that have undergone immense heat and pressure through a process called Metamorphism

​schist

Multiple Choice

What are the three types of rocks?

• 1. Sedimentary

  2. Igneous

  3. Metamorphic

• 1. Metamorphic

  2. Clastic

  3. Fossils

• 1. Sedimentary

  2. Conglomerate

  3. Breccia

• 1. Igneous

  2. Sedimentary

  3. Minerals

Poll

Form a hypothesis:

is there a relationship between these three main groups of rocks? how might they be related?

• No relationship

• the three types of rocks have a relationship

Fill in the Blank

An igneous rock can become a metamorphic rock when placed under immense_ and_

Open Ended

Provide any questions you have about the content you learned today.