Question

Long Answer Type Questions

1.Classify the soil on the basis of the size of the particles of the soil ?

ans

2. Write about soil erosion.

ans

3. Explain a method of making earthen pots.

ans.

4. Explain the soil profile.

ans


Class 7



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Answer 1

Answer:

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Question 1.

Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Starting with the finest, clay particles are smaller than 0.002 mm in diameter. ... Sand ranges from 0.05 to 2.0 mm. Particles larger than 2.0 mm are called gravel or stones.

Question 2.

Soil erosion is defined as the wearing away of topsoil. ... The impact from the raindrops loosens topsoil, allowing small fragments to detach. If the rainfall continues, water gathers on the ground, causing water flow on the land surface, known as surface water runoff, which carries soil away and deposits it elsewhere.

Question 3.

1. sourcing clay. ...
2. preparing clay. ...
3. center clay on wheel. ...
4. create form (throwing off the hump) ...
5. use string to cut piece off the hump. ...
6. place on ware board to dry (leather hard) ...
7. store pieces covered for 1-2 days.
8. trim pieces when leather hard.

Question 4.

A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious physical features, mainly colour and texture.

Answer 2

Answer:

1 . Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Starting with the finest, clay particles are smaller than 0.002 mm in diameter. ... Silt particles are from 0.002 to 0.05 mm in diameter.

2.Soil erosion is defined as the wearing away of topsoil. ... The impact from the raindrops loosens topsoil, allowing small fragments to detach. If the rainfall continues, water gathers on the ground, causing water flow on the land surface, known as surface water runoff, which carries soil away and deposits it elsewhere.

3. my step by step process for making handmade pottery

• handmade potterysourcing clay. ...
• handmade potterysourcing clay. ...preparing clay. ...
• handmade potterysourcing clay. ...preparing clay. ...center clay on wheel. ...
• handmade potterysourcing clay. ...preparing clay. ...center clay on wheel. ...create form (throwing off the hump) ...
• handmade potterysourcing clay. ...preparing clay. ...center clay on wheel. ...create form (throwing off the hump) ...use string to cut piece off the hump. ...
• handmade potterysourcing clay. ...preparing clay. ...center clay on wheel. ...create form (throwing off the hump) ...use string to cut piece off the hump. ...place on ware board to dry (leather hard) ...
• handmade potterysourcing clay. ...preparing clay. ...center clay on wheel. ...create form (throwing off the hump) ...use string to cut piece off the hump. ...place on ware board to dry (leather hard) ...store pieces covered for 1-2 days.
• trim pieces when leather hard

4. A soil profile is a vertical cross-section of the soil, made of layers running parallel to the surface. These layers are known as soil horizons. The soil is arranged in layers or horizons during its formation. These layers or horizons are known as the soil profile.

Explanation:

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