Last updated on December 13th, 2023 at 02:26 pm
Answer the following questions:
Short Answer Questions:
(a) What is pollution?
Pollution refers to any harmful change in air, water, land, or any other aspect of the environment due to human action. The things that cause pollution are known as pollutants.
(b) Name any two clean energy sources.
Two clean energy sources are solar energy and wind power.
(c) What are the main types of pollution?
The main types of pollution are air pollution, water pollution, soil pollution, noise pollution, and nuclear pollution.
(d) In which two categories can waste be divided?
Waste can be divided into biodegradable waste and non-biodegradable waste.
(e) Suggest one solution to soil pollution.
One solution to soil pollution is to minimize the use of plastic and polythene items, as they do not biodegrade and harm the soil.
(f) How are the rivers getting polluted?
Rivers get polluted through the dumping of industrial and agricultural wastes, as well as the disposal of sewage waste from towns and cities.
(g) What is recycling? How is it useful?
Recycling is the process of producing a new product from used or waste material. It is useful as it helps save raw materials, reduces energy consumption, and minimizes pollution.
[h] What is pollution?
The act of adding harmful substances to the air, water, and land is known as pollution. These harmful substances are called pollutants
[i] What are the different types of pollution?
Pollution can be classified into four main types:
Air Pollution,
Water Pollution,
Noise Pollution
Soil Pollution.
[j] How to reduce pollution?
By planting saplings and keeping our environment clean, we reduce pollution.
Long Answer Questions:
(a) What are the causes of air pollution? Suggest some ways to minimize it.
Causes of air pollution include emissions from vehicles and factories, burning fossil fuels, and industrial processes. Ways to reduce this include reducing dependence on fossil fuels, using clean energy sources, controlling vehicle pollution, and planting more trees.
(b) What do you understand by water pollution? Write its causes and effects.
Water pollution is the contamination of water bodies by harmful substances. Causes include industrial discharges, sewage disposal, and the use of chemical fertilizers. Effects include diseases, harm to aquatic life, and contamination of drinking water.
(c) Write a short note on soil pollution.
Soil pollution occurs when harmful substances mix with the soil due to human activities. It can result from improper waste disposal, use of non-biodegradable materials, and extensive use of pesticides. It affects human health and the growth of plants.
(d) Define noise pollution and describe ways to minimize it.
Noise pollution is unwanted and unpleasant sound that adversely affects human health. Ways to minimize it include soundproofing, regulating noise-producing machines, and discouraging loud activities in public spaces.
(e) What is nuclear pollution and how is it caused? Write some ways to curb it.
Nuclear pollution is caused by radioactive materials like radium, uranium, and plutonium. Improper disposal and accidents can lead to hazardous exposure. To curb it, a total ban on nuclear tests, proper disposal of radioactive materials, and strict safety measures are essential.
HOTS Questions:
(a) List five actions from your daily life that contribute to environmental pollution. Think of some ways to reduce or curb that pollution.
Using single-use plastics
Wasting water
Excessive use of vehicles
Improper disposal of electronic waste
Overconsumption of resources
Ways to reduce: Use reusable items, conserve water, use eco-friendly transportation, recycle electronic waste, practice sustainable consumption.
(b) What is carpooling? How can it help in reducing air pollution?
Carpooling is the sharing of car rides by multiple individuals. It helps reduce air pollution by decreasing the number of vehicles on the road, leading to lower emissions and improved air quality.
(c) Do you think environmental pollution is as serious as scientists say it is? Give reasons to support your answer.
Answers may vary, but possible reasons could include the scientific evidence of climate change, adverse health effects, and the impact on ecosystems, which all indicate the seriousness of environmental pollution.
(d) How can we reuse old newspapers and magazines?
Old newspapers and magazines can be reused by turning them into:
- Gift wrap
- Art and craft projects
- Composting material
- Donating to schools or community centers
- Making paper bags or envelopes
