Pollution and Conservation of Environment - 2 Class 5 Worksheet SST

Q1: Multiple Choice Questions (MCQs).

(i) What is the primary cause of air pollution?
(a) Natural disasters
(b) Industrial activities
(c) Plant growth
(d) Ocean currents

(ii) Which of the following is a source of noise pollution?
(a) Rainfall
(b) Silent library
(c) Birds chirping
(d) Loudspeakers at a concert

(iii) Light pollution is caused by:
(a) Decreased industrial activities
(b) Efficient lighting systems
(c) Over-illumination and artificial light sources
(d) Complete darkness during the night

(iv) Water pollution can be caused by:
(a) Regular cleaning of household items
(b) Releasing industrial waste into water bodies
(c) Planting trees near water sources
(d) Collecting rainwater in barrels

(v) What is the effect of soil pollution on the soil?
(a) Increases fertility
(b) Makes it more productive
(c) Renders it infertile
(d) Encourages plant growth

Q2: Fill in the Blanks.

(i) Pollution refers to the contamination of the environment, leading to instability, disorder, and harm to physical systems or living organisms. It involves the undesirable mixing of _______________, air, water, land, or soil.

(ii) Air pollution is primarily caused by human activities such as the burning of fuels in factories and vehicles, incineration of garbage, and release of smoke and harmful gases into the atmosphere. Natural phenomena like _______________, forest fires, and volcanic eruptions also contribute.

(iii) Water pollution can be caused by natural factors like storms leading to the dissolution of mud and soil, as well as human activities like releasing industrial and household waste into water sources. Everyday activities such as washing clothes in rivers can also contribute to water pollution.

(iv) Land or soil pollution occurs when solid waste, including plastic bags and metal containers, is dumped into the soil. This practice renders the soil infertile due to the continuous use of _______________ and the dumping of waste.

(v) Noise pollution refers to excessive and unwanted sounds in the atmosphere. Sounds louder than _______________ decibels can be harmful to the ears. Noise pollution can be caused by sources like cars, airplanes, loudspeakers, and machines in factories.

Q3: True or False.

(i) Natural factors play no role in air pollution.

(ii) Noise pollution can lead to hearing loss and sleep disturbances.

(iii) Water pollution has no impact on plants and animals living in water bodies.

(iv) Light pollution has adverse effects on the behavior of animals and astronomical observations.

(v) Pollution primarily poses a threat to human health but not to the environment.

Q4: Match the Following.

Match the types of pollution with their definitions.

Q5: Short Answer Questions.

(i) Explain two human activities that contribute to water pollution.

(ii) How does air pollution affect both human health and the environment?

(iii) Describe two adverse effects of noise pollution on living beings.

(iv) Why is light pollution harmful to astronomical observations?

(v) How can individuals help in reducing soil pollution in their local areas?

You can access the solutions to this worksheet here.