Upload
mohamed-ezran
View
322
Download
3
Tags:
Embed Size (px)
Citation preview
MAN’S IMPACT ON THE ENVIRONMENT
Impact – influence, alter, effect
Positive and constructive Negative and destructive
1) Write two headings on the cardboard. (Positive Impact) & (Negative Impact)
2) Look at the pictures and arrange them according to what you think is positive and negative.
3) Remember, arrange based on what you see only.
End
Positive Impact
Man-made Materials
Medical Advancement
Farming and
Breeding
Invention of machinery
Negative Impact
Global WarmingAirWaterLand
2:001:591:581:571:561:551:541:531:521:511:501:491:481:471:461:451:441:431:421:411:401:391:381:371:361:351:341:331:321:311:301:291:281:271:261:251:241:231:221:211:201:191:181:171:161:151:141:131:121:111:101:091:081:071:061:051:041:031:021:011:000:590:580:570:560:550:540:530:520:510:500:490:480:470:460:450:440:430:420:410:400:390:380:370:360:350:340:330:320:310:300:290:280:270:260:250:240:230:220:210:200:190:180:170:160:150:140:130:120:110:100:090:080:070:060:050:040:030:020:01End2:00
Man-made MaterialsFarming & Breeding
New MachineryMedical Advancement
Air Pollution Land Pollution
FactoriesAutomobile
Improper Disposal of rubbish
Deforestation
Improper Disposal of toxic waste
Burning of trees
Global Warming
Water Pollution
Pesticides Oil Spillage
Improper disposal of rubbish into river
Untreated sewage
1. Air Pollution
Contaminants released into the atmosphere causingharm to the environment and organisms.
FactoriesAutomobile
Effects of Air Pollution
• Causes respiratory problems.
• Causes acid rain when pollutants dissolve in the rain.
• *Release of chlorofluorocarbons(CFCs) causes global warming.
2. Land Pollution
Pollutants or wastes are disposed on land causing harm to the environment and the organisms.
Burning of trees
Improper Disposal of rubbish
Improper Disposal of toxic waste
Effects of Land Pollution
• Land unsuitable for use.
• Soil unsuitable for farming and breeding.
• Toxic wastes may seep into water bodies causing water pollution.
3. Water PollutionContaminants are released into water bodies causing harm to the environment and organisms.
Water bodies: Oceans, Rivers and Drains
Pesticides
Oil SpillageImproper disposal of rubbish
into river
Untreated sewage
Effects of Water Pollution
• Harms coastal wildlife (e.g. birds covered with oil)
• Harms or kills marine life.
• Causes stagnant water which encourages breeding of mosquitoes.
1. List 2 positive impact of Science and Technology.
(i) Medical advancement/New machinery(ii) Farming and breeding/Man-made materials
2. What are two sources of air pollution?Factories and automobiles.
3. State two effects of land pollution.
(i) Land unsuitable for use/Toxic waste may seep into the water bodies causing water pollution.
(ii) Soil becomes unsuitable for farming and breeding.
4. What type of gas when released into the atmosphere causes global warming?
Chlorofluorocarbons/CFCs
Find out how Singapore does the following.
a) Treats contaminated water
b) Disposes waste
c) Reduces air pollution
Useful keywords to help in your research:
-National Environment Agency
-Singapore Environment Council