Tuesday, March 1, 2016

CBSE Class 6 - Science - CH 16 - Garbage In Garbage Out (Worksheet)

Garbage In Garbage Out


CBSE Class 6 - Science - CH 16 - Garbage In Garbage Out (Worksheet)
Landfill (Image Courtsey: pixabay)

Class 6 - Science - Worksheet


Fill In the Blanks

1. Solid waste generated in our homes is called domestic waste. It is commonly called as ___________.


2. ________ are the large open areas used to dispose solid waste.


3. ________ are called farmer's friends and are used in vermi-composting.


4. _______ is a domestic liquid waste.


5. The rotting and conversion of some materials into manure is called _____________.


Mark True or False

6. Compost is an organic matter used as fertilizer.     (T/F)




7. Old news papers cannot be recycled. (T/F)


8. Empty plastic bottles can be reused. (T/F)


9. DDT (an insecticide) is a bio-degradable substance. (T/F)


10. Burning of leaves produce harmless gases (T/F)


11. Identify which of the following is a Gaseous waste, Liquid Waste or Solid Waste

(a) Smoke from a family factory
(b) Domestic Sewage
(c) Vegetable Peels
(d) Plastic Bottles
(e) Used oil after cooking


Gaseous Wastes: ________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________

Liquid Wastes:  ________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________


Solid Wastes: __________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________


12. Give examples of the following (at least two):

(a) Biodegradable wastes
(b) Non-biodegradable wastes
(c) Recycle Wastes
(d) Reusable Wastes
(e) Domestic Wastes


13. Following activities are listed to minimize waste. Categorise the following as Reduce, Reuse or Recycle Activity

(a) Use less amount of gift wrap paper.
(b) Do not throw plastic jar, use it as flower pot.
(c) Donate your old clothes to needy people.
(d) Use vegetable peels to develop compost.


14. (MCQ) Which of the following is a biodegradable waste?

(a) Glass
(b) Paper
(c) Chemical Fertilizer
(d) Aluminium Foil


15: (MCQ) Generally, it takes ______ to decompose solid waste in a landfill.

(a) 20 days
(b) 20 weeks
(c) 20 months
(d) 20 years




Answers:
1: Garbage
2: Landfills
3: redworms or earthworms
4: Sewage
5: composting
6: True
7: False (Newspapers can be recyled)
8: True
9: False (DDT is non-biodegradable)
10: False
11: Gaseous Wastes: a
Liquid Wastes: b, e
Solid Wastes: c, d

12:
(a) Biodegradable wastes - Vegetables, Paper
(b) Non-biodegradable wastes: Plastics, Metals, Fertilizers
(c) Recyle Wastes: Paper, Glass, Plastic
(d) Reusable Wastes: Plastics Containers, Cardboards
(e) Domestic Wastes: Fruit Peels, Plastic Bags

13:
  (a) Reduce
  (b) Reuse
  (c) Reuse
  (d) Recycle

14: (b) Paper
15:  (d) 20 years



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