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PowerPoint 15.1 What do you call this kind of pollution? What causes this layer of darkness? What kinds of illnesses will air pollution cause? How will this affect the people’s health? What other kinds of pollution do you know? What kind of pollution do we have in Hong Kong? In Hong Kong we have air pollution. There is a lot of smoke Air Pollution What does it cause? It causes breathing problems. Sources of Air Pollution in Hong Kong 2004 Power Plants 3% where 1(places electricity is produced) 1% 2 Vehicles 15% 3 Ships 4Construction Dust 6% 50% 5Airplanes 6Other 25% What problems will this type of pollution cause? What problems will this type of pollution cause? What problems will this type of pollution cause? What kind of pollution do we have in Hong Kong? In Hong Kong we have water pollution. There is a lot of rubbish in the river and the sea. Water Pollution What does it cause? It causes dirty water. What problems will this type of pollution cause? What problems will this type of pollution cause? What kind of pollution do we have in Hong Kong? In Hong Kong we have land pollution. There is a lot of rubbish. Land Pollution What does it do to the land? It makes the land dirty. What kind of pollution do we have in Hong Kong? In Hong Kong we have noise pollution. There are a lot of roadworks and traffic. Noise Pollution What does it cause? It causes hearing loss. What problems will this type of pollution cause? This section is optional. It’s intended for teacher’s reference. Problems caused: • Discoloured, smelly water • Water turns poisonous when this water reaches a storm drain or river. Prevention: • Store chemicals properly in well-ventilated area • Use chemicals that break down or decay naturally more quickly. • Don’t mix different waste chemicals • Find out what the health risks are. Teacher’s reference only natural & artificial foam • Natural sources, failed septic tanks, chemical spills or soap/ detergent can cause foam in the drain, river or stream. • Soapy foam is usually bright white with a soapy, fishy smell. Problems caused: • Will contaminate the water system. • Can cause algae to bloom. • Will cause harm to the fish and ecosystem. Prevention: • Maintain septic tanks • Wash cars or things on a grassy area • Throw soapy water into the proper places. Teacher’s reference only animal manure Problems caused: • Animal wastes contain lots of bacteria, viruses and give nutrients to the ground and surface water • Bacteria, and viruses are harmful to humans, water and sea creatures. • Nutrients in surface water make aquatic plants and algae grow. Prevention: • Keep manure piles away from water areas. Teacher’s reference only The End