this slide show is from cbse class vi , covers every important thing about soil.

1. SOIL

2. PRESENTED BY : Ektasingh

5. Loamy soil If the amount of large and fine particles is about the same, then the soil is called loamy soil. Loamy soil is a mixture of sand clay and another type of soil particles known as silt. Silt occurs as a deposits in rivers beds. The size of the silt particles is between those of sand and clay. The loamy soil also has humus in it. it has the right water holding capacity for the growth of plants.

6. Humus The rotting dead matter in the soil is called humus. LAYERS OF SOIL 1 HUMUS 2 WATER 3 CLAY 4 SAND 5 GRAVEL

7. SOIL PROFILE Soil profile has four layers named A-horizon B-horizon C-horizon Bedrock

8. A-horizon= this layer is generally soft, porous and can retain more water. It is called the topsoil or the a- horizon. B-horizon= this layer is generally harder and more compact the b-horizon or the middle layer. C-horizon= the third layer is the c-horizon which is made up of small lumps of rocks with cracks and crevices. Bedrock= this layer is the bedrock, which is hard and difficult to dig with a spade.

9. MOISTURE IN SOIL On heating, water in the soil evaporates, moves up and condenses on the cooler inner walls of the upper part of the boiling tube. The vapour coming out of the soil reflect the sunlight and the air above the soil seems to shimmer.

10. THANK YOU