Soil Quiz Review

The composition of topsoil consists of

• Humus, air, water, and rocks/minerals.

• Air, water, sunlight, and insects.

• Sunlight, bedrock, air, and plants.

• Water, air, parent material, and bedrock.

Plants get most of their nutrients from humus because

• Humus makes bedrock weather faster.

• Humus contains organic material and minerals that plants need.

• Humus helps keep the plants in place.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The rock particles in soil arranged from largest to smallest are

• Sand, clay, and silt.

• Silt, sand, and clay.

• Sand, silt, and clay.

• Clay, sand, and silt.

Which soil takes the longest amount of time to form?

• desert

• tropical

• temperate

• tundra

Which soil takes the shortest amount of time to form?

• desert

• tropical

• temperate

• tundra

Which climate produces the thickest soil?

• desert

• tropical

• temperate

• tundra

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

Why is water difficult to move though soils rich in clay?

• The particles are too large for water to pass through.

• The particles stay suspended in water before settling.

• The particles are so small that they fit together tightly preventing water to pass through.

The layer of loose, weathered material on Earth's surface in which plants can grow is

• topsoil

• humus

• weathering

• bedrock

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The solid layer of rock beneath the soil is called

• humus

• parent material

• bedrock

• subsoil