5.3.1 Types of Rocks

​Types of Rocks

By Joann Peda

Add to the chat any "cycles" in science that you have studied.

"Cycle" describes something that goes around over and over. Scientists often use the word cycle to describe patterns in nature that end where they began.

Remember the Law of Conservation of Mass - Matter cannot be created or destroyed. All matter on Earth has been here since its creation and cycles through Earth's systems.

Draw

Pretend you're a rock. Draw one part of the video that stuck with you. Add a caption.

Draw

Draw or describe two rocks that share similar characteristics from you kit. Do not use information in the key...just what you observe.

Your kit contains 12 unique rocks, but each falls into one of three types of rocks based on how they were formed.

• igneous

• sedimentary

• metamorphic

GET OUT YOUR ROCK KITS AND LET'S SEE WHAT TYPES OF ROCKS YOU HAVE.

Labeling

Match the following

Drag labels to their correct position on the image

sedimentary rock

igneous rock

metamorphic rock

Review video page 3 in edio

Igneous Rocks

• Forms when melted rock cools and hardens.

• Lava - melted rock above ground cools quickly (small or no crystals).

• Magma - melted rock below ground cools slowly (large crystals).

Look at your igneous rocks. Which were formed from lava and which from magma?
How do you know?

1. Obsidian

2. Granite

3. Basalt

4. Pumice

5. Rhyolite

• Formed by gravity pressing fragments of other rocks and minerals together. They are eventually cemented together.

• OR, by materials left behind after the evaporation of water.

Sedimentary Rocks

Look at your sedimentary rocks.

6. Shale (c)

7. Travertine (e)

8. Sandstone (c)

9. Conglomerate (c)

10. Limestone (e)

Metamorphic Rocks

• Formed from previously existing rock by the action of intense heat and pressure.

• The minerals in these rocks change their structure, but they do not melt.

Look at your metamorphic rocks.

​	​Possible parent rock(s)
​11. Slate	​shale or mudstone
​12. Marble	​limestone
​13. Quartzite	​quartz sandstone
​14. Gneiss	​Granit or other rocks, such as schist
​15. Schist	​Mudstones or igneous rocks, like tuffs

Match

Match the process the form these rock types.

• igneous rocks

• sedimentary rocks

• metamorphic rocks

cooling of magma or lava

compaction and cementation

changed by heat and pressure

• cooling of magma or lava

• compaction and cementation

• changed by heat and pressure