NOVVURA
CLASS-VIII
SUBJECT-SCIENCE
Answer the following question.
1. Earth worm and microorganisms are friends of farmer.
2. What factors does the time and frequency of irrigation depend on?
3. What would happen if fresh crop is stored without drying?
4. Identify the following:-
a) Lam a tool I help to ensure that seeds are sown uniformlyat proper distance who an
b) I am used for harvesting crops by cutting them close to the ground who am
5. What happen if we do not add nutrients in soil? the so
6. Why nylon fiber is becoming very popular for making clothes.
7. Why acrylic is more popular than natural wool.
8. Which unique characteristics are possessed by synthetic fibers?
9. What are the disadvantages of synthetic fiber?
10. Write any three positive characters of plastic.
11. What is the magnitude of the force when it acts in the opposite direction on an object
12. A ball rolling along the ground gradually slows down and finally comes to rest? Whytt
happens? What is the effect of this force?
13. Why cutting vegetables with a blunt knife is not easier?
Project:- Make five paper bags of different size by waste paper,
1 An
Lasthrooms are called the friends of
because they make the soil pure
Earthworm and microbes help to increase
Answers
Answered by
1
Yes earthworms and micro organisms are best friends. Earth worms will increase the soil fertility.
U said answer the following question not (questions) so I answered only 1st question
Answered by
1
- earthworms and microorganisms are friend of farmers because they fertilize the soil.
- if fresh crop is stored without drying it is affected by microorganisms and presence of moisture enhance germination of stored seeds.
- if we do not add nutrients to the soil then the plants will not grow properly.
- nylon is very popular for making cloth because nylon is very strong, long lasting and waterproof.
- acrylic is very popular than natural wool because it is very cheaper, easy to wash and very smooth to wear.
- disadvantages of synthetic are they are uncomfortable to wear as they do not absorb sweat and it catches fire quickly.
- three positive characters of plastic
- it is very cheaper than metals.
- it is water resistance or waterproof.
- it is durable ,long lasting and lightweight.
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