<–2/”>a >Specially designed mock Quiz for Environment for the systematic coverage of PSC Exam prelims syllabus and practice.
History Free Mock Quiz has 30 questions. If any issue is observed with answer students may comment below
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Environmental science is the study of the interactions between humans and the environment. It is a multidisciplinary field that draws on biology, chemistry, physics, geology, and other sciences to understand the natural world and how human activities are affecting it.
Environmental science is important because it helps us to understand the impact that our actions have on the planet. It can also help us to develop solutions to environmental problems, such as Climate change, pollution, and Biodiversity-2/”>Biodiversity loss.
There are many different branches of environmental science, each of which focuses on a different aspect of the environment. Some of the major branches of environmental science include:
- Atmospheric science: The study of the Atmosphere and its effects on the Earth’s climate.
- Biogeochemistry: The study of the chemical and physical processes that occur in the Earth’s Biosphere.
- ECOLOGY: The study of the interactions between organisms and their environment.
- Environmental engineering: The application of engineering principles to solve environmental problems.
- Environmental policy: The development and implementation of laws and regulations to protect the environment.
- Environmental toxicology: The study of the harmful effects of chemicals on the environment.
Environmental science is a rapidly growing field, and there are many opportunities for careers in this area. Some of the jobs that environmental scientists can do include:
- Environmental consultant: Environmental consultants help businesses and organizations to comply with environmental regulations.
- Environmental engineer: Environmental engineers design and build systems to protect the environment.
- Environmental scientist: Environmental scientists conduct research on environmental problems and develop solutions.
- Environmental educator: Environmental educators teach people about the environment and how to protect it.
If you are interested in a career in environmental science, there are many different paths that you can take. You can get a degree in environmental science, or you can get a degree in a related field, such as biology, chemistry, or engineering. You can also get experience in environmental science by volunteering or working part-time in an environmental organization.
Environmental science is a challenging but rewarding field. If you are interested in making a difference in the world, a career in environmental science may be the right choice for you.
Here are some of the major environmental problems facing the world today:
- Climate Change: Climate change is the long-term change in the Earth’s climate. It is caused by the emission of greenhouse gases, such as carbon dioxide, into the atmosphere. Climate change is causing the Earth’s temperature to rise, which is leading to a number of problems, such as sea level rise, extreme weather events, and changes in plant and animal life.
- Pollution: Pollution is the contamination of the environment with harmful substances. Pollution can come from a variety of sources, such as factories, cars, and farms. Pollution can cause a number of problems, such as respiratory problems, heart disease, and cancer.
- Biodiversity loss: Biodiversity loss is the decline in the variety of life on Earth. It is caused by a number of factors, such as habitat loss, overexploitation, and pollution. Biodiversity loss is a serious problem, as it can lead to the extinction of species and the disruption of Ecosystems.
- Deforestation: Deforestation is the clearing of forests for other uses, such as agriculture, mining, and development. Deforestation is a major problem, as it can lead to the loss of biodiversity, Soil erosion, and climate change.
- Water scarcity: Water scarcity is the lack of sufficient water to meet the needs of a Population. It is caused by a number of factors, such as climate change, population Growth, and pollution. Water scarcity is a serious problem, as it can lead to conflict, hunger, and disease.
These are just some of the major environmental problems facing the world today. It is important to be aware of these problems and to take action to address them. We can all make a difference by reducing our impact on the environment, supporting environmental organizations, and advocating for policies that protect the environment.
Topic 1: The Earth’s Atmosphere
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What is the atmosphere?
The atmosphere is the layer of gases that surrounds the Earth. It is held in place by the Earth’s gravity. -
What are the main gases in the atmosphere?
The main gases in the atmosphere are nitrogen (78%), Oxygen (21%), argon (0.9%), and carbon dioxide (0.04%). -
What are the functions of the atmosphere?
The atmosphere protects the Earth from harmful radiation, provides oxygen for life, and helps to regulate the Earth’s temperature. -
What are the different layers of the atmosphere?
The atmosphere is divided into four layers: the Troposphere, the Stratosphere, the Mesosphere, and the Thermosphere. -
What is the troposphere?
The troposphere is the lowest layer of the atmosphere. It is where most of the Earth’s weather occurs. -
What is the stratosphere?
The stratosphere is the second layer of the atmosphere. It is where the ozone layer is located. -
What is the mesosphere?
The mesosphere is the third layer of the atmosphere. It is the coldest layer of the atmosphere. -
What is the thermosphere?
The thermosphere is the fourth layer of the atmosphere. It is the hottest layer of the atmosphere.
Topic 2: The Earth’s Climate
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What is climate?
Climate is the Average weather conditions in a place over a long period of time. -
What are the factors that affect climate?
The factors that affect climate include the Earth’s orbit around the sun, the Earth’s tilt, the Earth’s atmosphere, and the Earth’s Oceans. -
What are the different Types of Climate?
The different types of climate include tropical, temperate, continental, and polar climates. -
What is Global Warming?
Global warming is the long-term heating of Earth’s climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere. The term is frequently used interchangeably with the term climate change, though the latter refers to both human- and naturally produced warming and the effects it has on our planet. It is most commonly measured as the average increase in Earth’s global surface temperature. -
What are the causes of global warming?
The main cause of global warming is the burning of fossil fuels, such as coal, oil, and natural gas. These fuels release greenhouse gases into the atmosphere, which trap heat and cause the Earth’s temperature to rise. -
What are the effects of global warming?
The effects of global warming are already being felt around the world, and they are expected to become more severe in the future. These effects include rising sea levels, more extreme weather events, changes in agricultural yields, and loss of biodiversity. -
What can be done to reduce global warming?
There are a number of things that can be done to reduce global warming, including reducing our reliance on fossil fuels, investing in RENEWABLE ENERGY sources, and improving Energy Efficiency.
Topic 3: The Earth’s Resources
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What are Natural Resources?
Natural resources are the materials and substances that occur naturally on Earth. They include Minerals, water, air, soil, Plants, and animals. -
What are the different types of natural resources?
Natural resources can be classified into renewable and non-renewable resources. Renewable resources are those that can be replenished over time, such as water and forests. Non-renewable resources are those that cannot be replenished over time, such as fossil fuels and minerals. -
What are the benefits of natural resources?
Natural resources provide us with food, water, shelter, and energy. They also play an important role in the environment, such as by providing habitats for plants and animals. -
What are the challenges of natural resources?
The challenges of natural resources include overuse, pollution, and climate change. Overuse occurs when we use natural resources faster than they can be replenished. Pollution occurs when we contaminate natural resources with harmful substances. Climate change is caused by the release of greenhouse gases into the atmosphere, which trap heat and cause the Earth’s temperature to rise. -
What can be done to conserve natural resources?
There are a number of things that can be done to conserve natural resources, including reducing our consumption, recycling, and reusing materials.
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Which of the following is not a type of environmental pollution?
(A) Air Pollution
(B) Water Pollution
(C) Land pollution
(D) Noise Pollution
(E) Light pollution -
Which of the following is the most common type of air pollutant?
(A) Carbon monoxide
(B) Nitrogen dioxide
(C) Sulfur dioxide
(D) Ozone
(E) Particulate matter -
Which of the following is the most common type of water pollutant?
(A) Sewage
(B) Industrial waste
(C) Agricultural runoff
(D) Oil spills
(E) Mining waste -
Which of the following is the most common type of land pollutant?
(A) Solid waste
(B) Hazardous waste
(C) Agricultural waste
(D) Mining waste
(E) Oil spills -
Which of the following is the most common type of noise pollutant?
(A) Traffic noise
(B) Industrial noise
(C) Construction noise
(D) Aircraft noise
(E) Music noise -
Which of the following is the most common type of light pollutant?
(A) Outdoor lighting
(B) Indoor lighting
(C) Advertising lighting
(D) Security lighting
(E) Traffic lighting -
Which of the following is the most common cause of air pollution?
(A) Transportation
(B) Industry
(C) Agriculture
(D) Residential
(E) Commercial -
Which of the following is the most common cause of water pollution?
(A) Transportation
(B) Industry
(C) Agriculture
(D) Residential
(E) Commercial -
Which of the following is the most common cause of land pollution?
(A) Transportation
(B) Industry
(C) Agriculture
(D) Residential
(E) Commercial -
Which of the following is the most common cause of noise pollution?
(A) Transportation
(B) Industry
(C) Agriculture
(D) Residential
(E) Commercial -
Which of the following is the most common cause of light pollution?
(A) Outdoor lighting
(B) Indoor lighting
(C) Advertising lighting
(D) Security lighting
(E) Traffic lighting -
Which of the following is the most effective way to reduce air pollution?
(A) Use public transportation
(B) Drive a fuel-efficient car
(C) Recycle
(D) Compost
(E) Plant trees -
Which of the following is the most effective way to reduce water pollution?
(A) Reduce, reuse, and recycle
(B) Use less water
(C) Fix leaks
(D) Rainwater harvesting
(E) Install a water filter -
Which of the following is the most effective way to reduce land pollution?
(A) Reduce, reuse, and recycle
(B) Compost
(C) Use less plastic
(D) Buy local produce
(E) Plant trees -
Which of the following is the most effective way to reduce noise pollution?
(A) Use earplugs
(B) Install soundproofing
(C) Avoid loud noises
(D) Turn down the volume on your TV or radio
(E) Talk to your neighbors about the noise -
Which of the following is the most effective way to reduce light pollution?
(A) Turn off lights when you leave a room
(B) Use energy-efficient light bulbs
(C) Install motion sensors
(D) Plant trees
(E) Use blackout curtains -
Which of the following is the most common environmental problem in the United States?
(A) Air pollution
(B) Water pollution
(C) Land pollution
(D) Noise pollution
(E) Light pollution -
Which of the following is the most common environmental problem in developing countries?
(A) Air pollution
(B) Water pollution
(C) Land pollution
(D) Noise pollution
(E) Light pollution -
Which of the following is the most common environmental problem in the world?
(A) Air pollution
(B) Water pollution
(C) Land pollution
(D) Noise pollution
(E) Light pollution -
Which of the following is the most effective way to solve environmental problems?
(A) Reduce, reuse, and recycle
(B) Use less energy
(C) Drive less
(D) Eat less meat
(E) Plant trees