Unit-3: Environmental Pollution Flashcards
(44 cards)
What is air pollution?
Air pollution is the contamination of the atmosphere by harmful substances like gases, dust, and smoke.
Name two causes of air pollution.
Industrial emissions and vehicular exhaust.
Mention one effect of air pollution on health.
It causes respiratory problems like asthma and bronchitis.
Give one control measure for air pollution.
Promote the use of cleaner fuels like CNG and renewable energy.
Q: Define water pollution.
A: Water pollution is the contamination of water bodies by harmful substances such as chemicals and waste.
Q: Name one cause of water pollution.
A: Untreated industrial discharge into rivers.
Q: State one effect of water pollution.
A: It causes waterborne diseases like cholera and dysentery.
Q: What is one way to control water pollution?
A: Treating wastewater before discharging it into water bodies.
Q: What is soil pollution?
A: Soil pollution is the contamination of soil due to chemicals, waste, and other harmful substances.
Q: Name one cause of soil pollution.
A: Excessive use of pesticides and fertilizers.
Q: State one effect of soil pollution.
A: Loss of soil fertility and contamination of crops.
Q: How can soil pollution be controlled?
A: By promoting organic farming and reducing chemical use.
Q: Define marine pollution.
A: Marine pollution is the contamination of oceans and seas by pollutants like plastics and oil spills.
Q: Name one source of marine pollution.
A: Dumping of plastic waste into the ocean.
Q: What is one effect of marine pollution?
A: It harms aquatic ecosystems and marine life.
Q: Suggest one way to reduce marine pollution.
A: Implement strict laws against ocean dumping.
Q: What is noise pollution?
A: Noise pollution is the excessive and harmful levels of sound in the environment.
Q: Mention one source of noise pollution.
A: Traffic on roads.
Q: State one effect of noise pollution on humans.
A: Hearing loss and increased stress levels.
Q: How can noise pollution be controlled?
A: By using soundproof materials and limiting loudspeaker use.
Q: What is thermal pollution?
A: Thermal pollution is the rise in water temperature due to the discharge of heated water by industries.
Q: Name one cause of thermal pollution.
A: Power plants releasing hot water into rivers.
Q: State one effect of thermal pollution.
A: It reduces oxygen levels in water, harming aquatic life.
Q: How can thermal pollution be minimized?
A: By using cooling ponds or towers.
