Fill in the blanks :-
1. One-fifth of the area of the earth is covered with _____________.
2. _____________ is the uppermost layer of the Earth's crust in which plants grow.
3. Breaking down of rocks into smaller pieces due to the action of natural forces is called _____________.
4. Weathering is a _____________ process.
5. ______________ is the vertical section of soil showing different soil layers.
6. ___________ - Horizon consists of small lumps of rocks.
7. The most suitable soil for growing plants is _____________.
8. Crop rotation helps in maintaining the ______________ of soil.
9. _____________ soil has no humus.
10. ____________ are the largest soil particles.
_________________________________
True or False :-
1. Soil is a type of natural resource.
2. C-horizon is the layer of soil which is rich in humus.
3. Water plays no role in soil formation.
4. Wind is not a weathering agent.
5. Red colour of soil is due to the presence of iron oxide.
6. Clayey soils are best for growing crops.
7. Sandy soil cannot hold nutrients.
8. Black soil is ideal for growing tea.
9. Tilling or ploughing of soil loosens the soil causing soil erosion.
10. Percolation rate of all soils is different.
Answers
Explanation:
1. land
2.crust
True or false
1. true
3. false
4. false
8.true
9. true
this is what I know sorry for remaining
Fill in the blanks:-
1.One-fifth of the area of the earth is covered with soil.
2.Top soil is the uppermost layer of the Earth's crust in which plants grow.
3.Breaking down of rocks into smaller pieces due to the action of natural forces is called Weathering.
4.Weathering is a metamorphic process.
✦Weathering is the process of breaking down or dissolving of rocks and minerals on Earths surface.
5.Soil profile is the vertical section of soil showing different soil layers.
✦With the help of a soil profile,we can know more about the soil fertility.
✦As the soil weathers and/or organic matter decomposes, the profile of the soil changes.
6.C-Horizon consists of small lumps of rocks.
✦This layer is composed of unconsolidated parent material from which the A and B horizons have formed and small lumps of rocks with cracks and crevices.
7.The most suitable soil for growing plants is Loam.
✦Because it is ideal blend of soil for plant growth.It is a mixture of sand, clay, and silt.
8.Crop rotation helps in maintaining the fertility of soil.
✦It manages your soil and fertility, reduce erosion, improves soil's health, and increase nutrients.
9.Arid soil has no humus.
10.Sand are the largest soil particles.
______________
True or false:-
1.Soil is a type of natural resource.
➥True
2.C-horizon is the layer of soil which is rich in humus.
➥False
3.Water plays no role in soil formation.
➥False
✦Water is very essential for healthy & productive soils.
✦It secures the physical particulates in soil structure & helps the nutrients to be transported to plants.
4.Wind is not a weathering agent.
➥False
✦Water, ice, acids, salts, plants, animals, and changes in temperature are all weathering agents.
5.Red colour of soil is due to the presence of iron oxide.
➥True
✦The Iron found in the soil is oxidised more readily due to the higher oxygen content.Hence,the soil develops red colour.
6.Clayey soils are best for growing crops.
➥True
7.Sandy soil cannot hold nutrients.
➥True
✦Sandy soil is unable to hold as much water as the soils with heavier textures.Soils with narrow pore spacing can hold water more tightly than soils with wide pore spacing.
8.Black soil is ideal for growing tea.
➥True
9.Tilling or ploughing of soil loosens the soil causing soil erosion.
➥True
✦It disrupts the soil structure and makes the soil particles dislodged and cause soil erosion by accelerating surface runoff.
10.Percolation rate of all soils is different.
➥True
✦The process where the water flows gradually through the sol is called percolation of water.
✦It is measured in the range of 1 to 8 inches or more per hour.
✦Sandy soils have highest percolation rates.
______________