Lesson 3 - Rocks

Rock formed above ground with lava

• Sedimentary Rock
• Extrusive Igneous Rock
• Intrusive Igneous Rock
• Metamorphic Rock

Tags

NGSS.MS-ESS2-2

Rock formed by heat and pressure underground

• Sedimentary Rock
• Extrusive Igneous Rock
• Intrusive Igneous Rock
• Metamorphic Rock

Rock formed below ground by magma

• Sedimentary Rock
• Extrusive Igneous Rock
• Intrusive Igneous Rock
• Metamorphic Rock

How can you tell if a rock is an extrusive igneous rock?

• It will have obvious pieces of sediment or layers visible.
• The mineral crystals will be too small to see.
• It will have fossils.
• It will have large, visible crystals of minerals.

This is an igneous rock. Is it intrusive or extrusive?

• intrusive
• extrusive

How can you tell if an igneous rock is intrusive?

• It will have large pieces of mineral (easy to see the crystals)
• The mineral crystals will be too small to see.
• It will have layers.
• It will have fossils.

How do Sedimentary rocks form?

• Sediments are compacted and cemented together in areas that once had water.
• Molten rock cools and hardens into solid rock.
• Rock is buried deep in the earth where it is changed by extreme heat and pressure.

How do igneous rocks form?

• Sediments are compacted and cemented in areas that once had water.
• Molten rock cools and hardens into solid rock.
• Rock is buried deep underground where it is changed by extreme heat and pressure.

What kind of rock is this?

• Metamorphic
• Igneous - Intrusive
• Igneous - Extrusive
• Sedimentary

What kind of rock is this?

• Metamorphic
• Igneous - Intrusive
• Igneous - Extrusive
• Sedimentary