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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Upper Elementary Science - II
3.31 Waste Management

What is waste management? Collection, recycling, and disposal of waste is called waste management.

What is the purpose of recycling? The purpose of recycling is to reduce the amount of garbage and hence curb pollution.

Can all wastes be recycled? No, not all wastes can be recycled. Plastic is such an example.

What happens when substances cannot be recycled? They are dumped everywhere creating environmental pollution.

Hazardous wastes: A hazardous waste is a waste that is either toxic (poisonous), can catch fire, corrode other materials, or react with other chemicals.

Solid waste: Solid waste generally refers to the paper, aluminum cans, glass jars, plastic bottles, spoiled food, broken TV sets, old stoves, junk cars, and other such trash and garbage.

Hazardous wastes can pollute the land. They can even pollute the water that is underneath, or next to, the polluted land.

Open garbage dumps are the places where all our garbage goes. This can be a breeding place for flies and mosquitoes. Also the wind could cause movement of litter.

A sanitary land-fill is an improved form of the garbage dumps. In a sanitary landfill, a layer of soil is applied daily over the waste which keeps pests away. Also these days, the land-fills are equipped with a gas extract system. The land-fills are closed and gas extract system is installed. This extracts the gas from the garbage. This gas is often burnt in a gas engine to generate electricity.


Directions: Answer the following questions.
Q 1: The gas from the garbage can be used to produce electricity.
False
True

Q 2: The wastes from industries are hazardous.
False
True

Q 3: Which of these is right
Disposal, collection and recycling
Collection, recycling and disposal
Recycling, collection and disposal

Q 4: A land-fill is a place for
generate energy
dumping garbage
recycling

Q 5: which of the following cannot be recycled
A bottle
A metal can
A plastic container
Your old books

Q 6: Which of these can be recycled
Old Newspaper
An old TV
Batteries
A plastic cup

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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