Monday 3 June 2013
Sunday 2 June 2013
homework monday 3rd june- due monday 10th june
Complete the word fill and worksheet about testing soil pH- due monday 10th june
Word bank acid air alkali drain erosion tiny humus larger lime minerals mixture creatures peat pH roots worms
6. Clay soil is made of rock particles and has little air in it, so very few live in it.
7. Sandy soil is made of rock particles and so water can away more easily.
8. Plants and crops will only grow well if the soil is in the right range, normally from 4.5 to 7.5.
9. If the pH of the soil is low, it may be too and so it must be made more alkaline by adding .
homework sheet:
Word bank acid air alkali drain erosion tiny humus larger lime minerals mixture creatures peat pH roots worms
1. Soil is a of many substances and there is a wide variety of different soils.
2. Soil is held together by plant which help prevent the process of .
3. Creatures such as are very important because they help mix up the soil, and so can then circulate.
4. Dead organic matter is called and helps keep nutrients in the soil.
5. Loam is a good quality soil because it has the right balance of .
6. Clay soil is made of rock particles and has little air in it, so very few live in it.
7. Sandy soil is made of rock particles and so water can away more easily.
8. Plants and crops will only grow well if the soil is in the right range, normally from 4.5 to 7.5.
9. If the pH of the soil is low, it may be too and so it must be made more alkaline by adding .
10. If the pH of the soil is high, it is too and needs to be made more acidic by mixing in .
homework sheet:
Subscribe to:
Posts (Atom)