Class 7 Our Environment - Q and A

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Our Environment - Class 7 CBSE

Our Environment

Class 7 CBSE - Important Questions & Answers

Environment

Definitions and Concepts

  1. What is environment?
    Environment is the place, people, things, and nature that surround any living organism.
  2. What are the main components of the environment?
    The three main components of the environment are: Natural, Human-made, and Human.
  3. What are examples of natural components of the environment?
    • Air (Atmosphere)
    • Water (Hydrosphere)
    • Land (Lithosphere)
    • Living Things (Biosphere)
  4. What are examples of human-made components of the environment?
    • Buildings
    • Parks
    • Bridges
    • Roads
    • Industries
    • Monuments
  5. What are examples of human components in the environment?
    • Individual
    • Family
    • Community
    • Religion
    • Educational
    • Economic
    • Political Situation
  6. Name the two types of environment.
    The two types of environment are natural environment and human-made environment.
  7. What does natural environment include?
    Natural environment includes both biotic and abiotic conditions on Earth.
  8. What is biotic environment? Give examples.
    Biotic environment is the world of living organisms, such as plants and animals.
  9. What is abiotic environment? Give examples.
    Abiotic environment is the world of non-living elements, such as land, air, and water.
  10. What is human environment?
    Human environment is the activities, creations, and interactions among human beings.
  11. What are the four main components of the natural environment?
    The four main components of the natural environment are lithosphere, hydrosphere, atmosphere, and biosphere.

Lithosphere

  1. What is lithosphere?
    Lithosphere is the solid crust or hard top layer of the Earth made of rocks and minerals.
  2. Name two landforms found in the lithosphere.
    Two landforms found in the lithosphere are mountains and plains.
  3. Mention two uses of the lithosphere.
    The lithosphere provides land for agriculture and human settlements, and it is a source of mineral wealth.

Hydrosphere

  1. What is hydrosphere?
    Hydrosphere is the domain of water on the Earth.
  2. Name two water bodies in the hydrosphere.
    Two water bodies in the hydrosphere are rivers and oceans.
  3. Why is hydrosphere essential?
    Hydrosphere is essential because it provides water necessary for the survival of all living organisms.

Atmosphere

  1. What is atmosphere?
    Atmosphere is the thin layer of air that surrounds the Earth.
  2. What holds the atmosphere around the Earth?
    The gravitational force of the Earth holds the atmosphere around it.
  3. Mention two functions of the atmosphere.
    The atmosphere protects us from harmful rays and heat of the Sun, and it contains gases, dust, and water vapour needed for life.

Biosphere

  1. What is biosphere?
    Biosphere is the narrow zone where land, water, and air interact to support life.
  2. Which two kingdoms make up the biosphere?
    The plant kingdom and the animal kingdom make up the biosphere.

Ecosystem

  1. What is an ecosystem?
    An ecosystem is a system formed by the interaction of living organisms with each other and with their physical surroundings, linked by the transfer of energy and materials.
  2. Give two examples of large ecosystems.
    Two examples of large ecosystems are rainforest and desert.
  3. Give one example of a small ecosystem.
    One example of a small ecosystem is a pond.
  4. Give some examples of human made ecosystem.
    Examples of human-made ecosystems include:
    • Gardens
    • Parks
    • Farmlands
    • Aquariums
    • Artificial lakes or ponds
    • Zoos
  5. Are plants, animals, and humans interdependent?
    Yes, plants, animals, and humans are interdependent because they depend on each other and their surroundings for survival.

Human Environment

  1. How did early humans adapt to their surroundings?
    Early humans adapted to their surroundings by leading a simple life and fulfilling their needs from nature.
  2. Name four important developments in human history that changed the environment.
    Four important developments in human history that changed the environment are growing crops, domesticating animals, invention of the wheel, and the industrial revolution.
  3. What is the barter system?
    The barter system is a trade system in which goods are exchanged without the use of money.
  4. What is meant by "information revolution"?
    Information revolution means the development of fast and easy communication across the world.

Conservation Message

  1. Why must humans use the environment in a harmonious way?
    Humans must use the environment in a harmonious way to maintain a balance between natural and human environments.
  2. On which day is World Environment Day celebrated?
    World Environment Day is celebrated on 5th June every year.

Our Environment | Class 7 CBSE | Interactive Learning Resource

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