Question

Soil has particles of different sizes. Arrange the words given below in decreasing order of their particle size. Rock, clay, sand, gravel, silt [NCERT Exemplar]

Answer 1

The increasing order of soil particles is given below:

Smallest Largest

Clay < Silt < Gravel < Sand < Rock,

Answer 2

Answer:

The decreasing order of rock, clay, sand, gravel, slit according to their particle size is, Rock > Gravel > Sand > Slit > Clay

Explanation:

Wind, water, and climate break down rocks, resulting in soil formation. Weathering is the term for this process.

Small particles of diverse materials are produced by the weathering of rocks.

• A significant proportion of tiny stones can be found in gravelly soil. Gravels are generated by the erosive and concentrating action of rivers and waves, as well as the weathering of rocks.

There are four different types of soil:

Sandy soil, Silt Soil, Clay Soil, and Loamy soil

• Sandy soil is made up of microscopic pieces of weathered rock and is the poorest type of soil for growing plants.

• Silt soil is made up of rock and other mineral particles that are smaller than sand but larger than clay.

• Among the several forms of soil, clay is the smallest particle. This soil has excellent water storage properties and is resistant to moisture and air penetration.

• Loam is soil made up of sand, silt, and clay. It is capable of retaining moisture and nutrients.

     The decreasing order of their particle size is as follows

                 Rock > Gravel > Sand > Slit > Clay