EFFECTIVE NOTES: UNIT 5 WASTE MANAGEMENT

UNIT 5:  WASTE MANAGEMENT  (Year 6)

(Effective notes)

Lesson 1 : Waste

1 Waste is any materials that is no longer useful  and is thrown away.

2 There are various types of waste such as paper, plastic, glass, metal , chemical waste and organic waste.

……  chemical waste

…….Organic waste

3 Waste comes from various sources.

a)      Homes

b)      Factories

c)       Markets

d)      Foods stalls

e)      Agriculture farms

f)       Motor vehicles

 ........ waste from factories

IMPROPER WAYS OF WASTE DISPOSAL

1 Improper ways of waste disposal can be harmful to the evironment.

2 Example of improper waste disposal include

a)      Littering

b)      Open burning

c)       Throwing waste into drains or rivers

d)      Releasing smoke  from factories into the air

….. open burning

…. Smoke from factories

Lesson 2: Waste Efects

1 The harmful effects of improper waste disposal are

a)      Air pollution – caused by smoke and harmful gases from factories, motor vehicles and open burning.

b)      Water pollution – caused by the chemicals and toxic waste from factories, oil spills and sewage

c)       Flash floods – caused by waste that blocks the flow of water in drains and rivers

d)      Acid rain – caused by harmful substances that dissolve in rainwater

e)      Sickness and diseases – caused by harmful substances or animals such as rats and cockroaches that carry germs and cause diseases.

.......flash flood

PROPER WAYS OF WASTE DISPOSAL

To avoid the harmful effects , waste should be disposed in the proper ways.

a)      All rubbish must be put in a plastic bag and tied up properly.

b)      Rubbish is thrown in a rubbish bin and covered.

c)       Avoid open burning

d)      Reuse or  recycle waste

e)      Sewage and waste from homes and factories must be treated before it is released into rivers.

...... treated sewage

Interesting related webs:

1) Waste management association of Malaysia :  http://www.wmam.org/

2) Indoor and outdoor air pollution: http://www.lbl.gov/Education/ELSI/pollution-main.html

3) The effect of waste dispossal: http://www.ehow.com/about_5057045_effects-waste-disposal.html

EFFECTIVE ACTIVITIES:

Group 1 and 5: Name six various sources of waste.

Group 2 and 6: Four examples of improper waste disposal.

Group 3 and 7: Write five harmful effects of improper waste disposal.

Group 4 and 8: Give five proper ways to dispose waste.

Please email your answers to zaianskke@gmail.com.