Soils

Which soil horizon is on the bottom?

• topsoil

• subsoil

• bedrock

• bottomsoil

The ___________________ the grain size, the faster the water will move through the soil.

• more mixed

• smaller

• larger

The best soil for growing plants is

• mostly sand.

• mostly silt.

• mostly clay.

• a mixture of sand, silt, and clay.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The sand, silt, and clay portion of soil comes from weathered _____ material.

• parent

• bedrock

• plant

• insect

Most plants grow best in soils with a pH between _____.

• and 4

• and 10

• and 7

• and 12

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which factor plays the largest role in soil development?

• Parent material

• Topography

• Climate

• Biology

What is the primary medium for plant growth as mentioned in the video?

• Water

• Sunlight

• Air

• Soil

What is the definition of soil according to the video?

• A renewable resource

• Displaced dirt

• A mixture of minerals, organic matter, and water that can support life

• A type of rock

Why is soil considered not a renewable resource?

• Because it takes thousands or millions of years to form from rock

• Because it does not support life

• Because it can be easily replaced

• Because it is made of non-organic material

What is the main difference between soil and dirt according to the video?

• Soil cannot support life, whereas dirt can.

• Dirt is displaced soil.

• There is no difference; they are used interchangeably.

• Soil is used for construction, while dirt is not.