Rocks and Soil 3rd Grade

_________ is found in nature and is best for planting plants.

• Subsoil

• Loam

• Clay

• Topsoil

_________ rocks are rocks that have bands of minerals that have been pressed so hard they look like stripes.

• Sand

• Igneous

• Sedimentary

• Metamorphic

__________ rock  is a rock formed by melting lava and cooling to harden.  

• Igneous

• Metamorphic

• Sand

• Sedimentary

_________ rock is a rock formed by weathering and cementing sediments together.

• Methamorphic

• Igneous

• Sedimentary

• Sand

______________ rock is a rock formed by heat and pressure.

• Metamorphic

• Sand

• Sedimentary

• Igneous

____________ is the movement of sediment from broken rock.

• Erosion

• Weathering

• Deposition

____________ is the breaking down of rock.

• Erosion

• Deposition

• Weathering

_________ is an organic material with lots of nutrients.

• Bedrock

• Subsoil

• Topsoil

• Humus

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

________ layer has a little bit of humus, medium sized rocks and big tree roots will reach. 

• Humus

• Bedrock

• Subsoil

• Topsiol

The ________ layer has very little humus and lots of big rocks.

• Bedrock

• Subsoil

• Topsoil

• Humus