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CBSE Class 7 Geography: Environment Lesson Question and Answers

  1. Environment is our basic life support system.

  2. Environment provides us air, water, food and land.

  3. Define environment.
    Ans. The place, people, things and nature that surround any living organism is called environment.

  4. Environment is a combination of natural and human made phenomena.

  5. Natural environment refers to both biotic and abiotic conditions existing on the earth.

  6. Human environment refers to the activities and creations of human beings and the interactions among the human beings.

  7. Environment is derived from a French word environer / environner which means 'neighbourhood'.

  8. Land, water, air, plants and animals comprise the natural environment.

  9. The solid crust or the hard top layer of the earth is called lithosphere.

  10. Lithosphere is made up of rocks and minerals and is covered by a thin layer of soil.

  11. Various landforms like mountains, plateaus, plains, valleys etc are present in the lithosphere.

  12. Where are the landforms found?
    Ans. Landforms are found over the continents and on the ocean floors.

  13. Which domain of the earth provides grasslands, forests, lands for agriculture and human settlements?
    Ans. Lithosphere

  14. Which domain is a source of mineral wealth?
    Ans. Lithosphere

  15. The domain of water is referred to as hydrosphere.

  16. What does hydrosphere comprise of?
    Ans. Hydrosphere comprises of various water sources and different types of water bodies like rivers, lakes, seas, oceans etc.

  17. The atomosphere is a thin layer of air that surrounds the earth.

  18. The gravitational force of the earth holds the atmosphere around it.

  19. Which domain protects us from harmful rays and scorching heat of sun?
    Ans. Atmosphere

  20. What does the atmosphere consist of?
    Ans. Atmosphere consists of a number of gases, dust and water vapour.

  21. What causes / produces changes in the weather and climate?
    Ans. Changes in the atmosphere

  22. Plant and animal kingdom together make the biosphere.

  23. The living world is called the biosphere

  24. Define biosphere.
    Ans. The narrow zone of the earth where land, water and air interact with each other to support life is called biosphere.

  25. What is an ecosystem?
    Ans. Ecosystem: the system formed by the interation of all living organisms with each other and with the physical and chemical factors of the environment in which they live and linked by the transfer of energy and material.

  26. World Environment Day is celebrated on June 5 every year.

  27. All plants, animals and human beings (or all living things) are interdependent on each other.

  28. The relation between the living organisms and the relation between the organisms and their surroundings form a / an ecosystem.

  29. A rainforest, grassland, desert, mountains, lake, river, ocean and a pond, all are examples of a / an ecosystem.

  30. Early humans adapted themselves to the natural surroundings.
  31. Which are the major components of the environment?
    Ans. Natural environment, human-made environment and human environment are the major components of the environment.

  32. Give four examples of human-made environment.
    Ans. Buildings, bridges, roads and industries.


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