Act 20 Identifying Rock Types

Coal

• Igneous

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS3-1

Gabbro

• Igneous

• Metamorphic

• Sedimentary

Gneiss

• Igneous

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS2-1

Granite

• Igneous

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS2-1

Limestone

• Igneous

• Metamorphic

• Sedimentary

Obsidian

• Igneous

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS2-3

Phyllite

• Igneous

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS2-1

Sandstone

• Igneous

• Metamorphic

• Sedimentary

Organize these options into the right categories by their identifying characteristics.

Groups:

(a) Igneous

,

(b) Sedimentary

,

(c) Metamorphic

• Surface can be as smooth as glass.

• Individual crystals can be large enough to be seen by the human eye.

• May see bands, like the rock was pressed together.

• Can contain fossils.

• Can sometimes see or feel sand/pebbles.

• Crystals may be very small and hard to see.

• Can sometimes feel lighter than other rock types.