Environment Class 7 Social Science Chapter 1
The chapter Environment Class 7 Social Science under the Board of Secondary Education Manipur (BOSEM) curriculum typically covers the following key topics:
- Definitions
- Components of environment
- interaction between natural and human environment
- Ecosystems and their importance
- Environmental issues
- Conservation and protection
This chapter aims to raise awareness among students about the importance of the environment and the need to protect and conserve it for future generations.
Chapter Name: Environment
Subject: Social Science
Lesson: 1
Class: 7
Board: Board Of Secondary Education Manipur (BOSEM/BSEM)
Contents: Questions and Answers, Explanation Video and Quiz
Table of Contents
Environment Class 7 Questions and Answers
The Questions and Answers for the chapter Environment Class 7 Social Science are provided. Explanation videos are also provided for the convenience of the students.
Answer the following questions in a sentence
Q1. What is an environment?
Ans: Environment means the surroundings i.e., the places, people, nature and things of an organism.
Q2. What are the different types of environments?
Ans: The different types of environments are
- Natural environment
- Human environment
Q3. What is biodiversity?
Ans: The variety of lifeforms that is, the plants, animals, and microorganisms are known as biodiversity.
Answer the following questions in about 30 words.
Q1. Define the major spheres of the natural environment.
Ans: The major spheres of the natural environment are
- Lithosphere: The earth’s rigid outer shell comprises the crust and the uppermost part of the mantle.
- Atmosphere: The atmosphere is the layer of gases surrounding the earth. It mainly comprises nitrogen (78%) and oxygen (21%), with trace amounts of other gases like carbon dioxide, argon and water vapour.
- Hydrosphere: The hydrosphere encompasses all the water present on the earth’s surface, including oceans, seas, rivers, lakes and groundwater.
- Biosphere: The biosphere is the global sum of all ecosystems and living organisms, including plants, animals, microorganisms, and humans, as well as the environment in which they live.
Q2. Why should we stop the environmental damage?
Ans: We should stop the environmental damage because the natural environment has been adversely affected by pollution and degradation which is affecting the survival of the human race and all the living beings on earth.
Q3. Why are oceans important to us?
Ans: Oceans are vital because they help regulate the Earth’s climate, provide food like fish, support transportation and trade, and offer energy resources. They also host diverse marine life and are important for recreation and tourism. Oceans absorb carbon dioxide, playing a key role in fighting climate change
Q4. How do human activities pose a threat to the natural environment?
Ans: Human activities like agriculture, industry, transport road and building construction, mining, drilling of mineral oils etc have adversely affected the natural environment by degrading soil, wildlife, air and water.
Environment class 7: Explanation
Here is a video for Environment Class 7 Social Science Chapter 1
🤔 Think You Know the Environment? Prove It With This Quiz!
#1. Which sphere of the Earth is made up of water?
#2. The layer of gases surrounding the Earth is called the:
#3. What is the primary source of energy for most ecosystems?
#4. Deforestation mainly results in:
#5. What is the term for the surroundings or conditions in which a person, animal, or plant lives?
#6. Which of the following is an example of human-made surroundings?
#7. Which of the following is a component of the natural environment?
#8. What is the main purpose of conservation?
#9. An ecosystem consists of:
#10. The interaction of living organisms with their physical environment is known as:
#11. What can individuals do to help conserve the environment?
#12. Which of the following is a renewable resource?
#13. The part of the environment that includes living organisms is called the:
#14. Global warming is primarily caused by an increase in:
#15. Which of the following is not a cause of pollution?
Results
Congratulations 😊
REALLY! 😂
Choose the correct answer
- The continent of Africa is composed of rocks rich in
a. Sial
b. Sima
c. Nife
d. Granite
Ans: Sial - Which of the following is a biotic environment?
a. Water
b. Air
c. Plant
d. Soil
Ans: Plant - Noise pollution is an environmental problem mainly experienced in
a. Desert
b. Hilly area
c. Rural areas
d. Urban area
Ans: Urban area.
Fill in the blanks
a. The zone of interaction of land, water and air where living organisms live is called Biosphere.
b. The earth’s outer layer consisting of rocks is called the lithosphere.
c. The atmosphere is held to the earth by the force of gravity.
d. The main activities of early humans were food gathering and animal hunting.
Environmental issues and their solutions
List of major environmental issues, their effects and solutions
1. Climate Change
Problem: Climate change is caused by the buildup of greenhouse gases like carbon dioxide in the atmosphere, leading to global warming.
Effects:
Extreme Weather: More frequent and severe weather events like hurricanes, droughts, and heatwaves.
Rising Sea Levels: Melting polar ice caps and glaciers cause sea levels to rise, leading to coastal flooding.
Ecosystem Disruption: Altered weather patterns and temperatures disrupt habitats and threaten species with extinction.
Health Risks: Increased heat can lead to heat-related illnesses, and changing weather patterns can affect the spread of diseases.
Solutions:
Reduce Carbon Footprint: Use energy-efficient appliances, and reduce car travel by walking, biking, or using public transportation.
Renewable Energy: Invest in and use solar, wind, and other renewable energy sources.
Tree Planting: Trees absorb carbon dioxide, so planting more trees can help mitigate climate change.
2. Pollution
Problem: Air, water, and soil pollution from industrial activities, vehicle emissions, and waste can harm health and ecosystems.
Effects:
Health Problems: Respiratory diseases, cardiovascular conditions, and other health issues.
Ecosystem Damage: Pollution can kill plants and animals, disrupt food chains, and degrade natural habitats.
Water Contamination: Polluted water sources can lead to unsafe drinking water and harm aquatic life
Soil Degradation: Contaminants can reduce soil fertility, affecting agriculture and food security.
Solutions:
Reduce Waste: Recycle, reuse, and compost to minimize waste going to landfills.
Clean Energy: Use cleaner fuels and technologies to reduce emissions.
Water Treatment: Implement better wastewater treatment practices to keep water sources clean.
3. Deforestation
Problem: Cutting down forests for timber, agriculture, and development destroys habitats and contributes to climate change.
Effects:
Loss of Biodiversity: Destruction of habitats leads to the extinction of plant and animal species.
Climate Change Acceleration: Trees absorb carbon dioxide, and without them, more CO2 remains in the atmosphere.
Soil Erosion: Trees stabilize soil, and their removal leads to increased erosion and loss of fertile land.
Disruption of Water Cycles: Forests play a crucial role in maintaining local and global water cycles.
Solutions:
Sustainable Forestry: Use and promote sustainable logging practices.
Forest Conservation: Protect and restore forests through conservation programs.
Alternative Resources: Use alternative materials to reduce the demand for timber.
4. Loss of Biodiversity
Problem: The extinction of species due to habitat destruction, pollution, and climate change disrupts ecosystems and diminishes natural diversity.
Effects:
Ecosystem Imbalance: Loss of species can disrupt food chains and lead to ecosystem collapse.
Reduced Resilience: Less biodiversity makes ecosystems more vulnerable to diseases and climate change.
Loss of Resources: Many plants and animals provide resources like medicine, food, and raw materials.
Cultural Impact: Many cultures have deep connections to local wildlife and plants, and their loss affects cultural heritage.
Solutions:
Protect Habitats: Establish and enforce protected areas for wildlife.
Combat Poaching: Strengthen laws and enforcement against illegal hunting and trade of wildlife.
Support Conservation Efforts: Donate to and volunteer with organizations working to preserve biodiversity.
5. Overpopulation
Problem: Overpopulation leads to overconsumption of resources, increased waste, and greater environmental degradation.
Effects:
Resource Depletion: Increased demand for resources like water, food, and energy.
Waste Accumulation: More people produce more waste, leading to greater pollution and landfill use.
Habitat Destruction: Expanding human settlements encroach on natural habitats.
Increased Emissions: More people mean more vehicles and industries, leading to higher greenhouse gas emissions.
Solutions:
Education: Promote family planning and education about sustainable living.
Resource Management: Improve the efficiency of resource use and reduce waste.
Urban Planning: Develop sustainable cities with green spaces and efficient public services.
6. Water Scarcity
Problem: Many regions face a lack of clean water due to overuse, pollution, and climate change.
Effects:
Health Issues: Lack of clean water leads to diseases and poor health.
Agricultural Impact: Water shortages affect crop yields and food production.
Economic Stress: Industries and communities suffer from water scarcity, impacting economic stability.
Ecosystem Decline: Aquatic ecosystems suffer from reduced water levels and quality.
Solutions:
Water Conservation: Use water-saving devices and practices in homes and industries.
Pollution Control: Prevent industrial and agricultural runoff from contaminating water supplies.
Rainwater Harvesting: Collect and store rainwater for various uses.
8. Ocean Acidification
Problem: Increased CO2 levels lead to more acidic oceans, harming marine life and ecosystems.
Effects:
Marine Life Decline: Acidic waters can damage coral reefs, shellfish, and other marine species.
Ecosystem Disruption: Changes in ocean chemistry disrupt marine food webs and habitats.
Economic Impact: Fisheries and tourism industries suffer from the decline in marine life.
Biodiversity Loss: Acidification contributes to the loss of marine biodiversity.
Solutions:
Reduce CO2 Emissions: Lowering carbon emissions will help mitigate ocean acidification.
Marine Protection: Create marine protected areas to help ecosystems recover.
Sustainable Fishing: Practice and promote sustainable fishing to reduce stress on marine species.
9. Soil Degradation
Problem: Over-farming, deforestation, and pollution degrade soil quality, affecting agriculture and natural habitats.
Effects:
Reduced Fertility: Degraded soil can’t support healthy plant growth, leading to lower crop yields.
Increased Erosion: Without vegetation, the soil is more prone to erosion by wind and water.
Water Quality Issues: Soil degradation can lead to runoff that contaminates water sources.
Biodiversity Loss: Poor soil health affects plant and animal species that depend on it.
Solutions:
Sustainable Farming: Use crop rotation, organic farming, and reduced chemical use.
Erosion Control: Implement practices like terracing and planting cover crops to prevent erosion.
Reforestation: Plant trees and vegetation to restore degraded land.
