NCERT Class 7 Geography Chapter 1 Extra Questions covers all the important topics in a simplified and precise way. NCERT Class 7 Geography Chapter 1 Extra Questions are easy to understand and learn for the exams.
NCERT Class 7 Geography Chapter 1 Extra Questions
1. Define the environment?
Answer: Everything that we see in our surroundings forms an environment. It provides us air, water, food, and land – the basic needs of our life.
2. Why is our environment changing?
Answer: Our environment is changing because our needs are increasing day by day. To fulfill these needs we often don’t think about the environment and start modifying it.
3. What does the lithosphere provide us?
Answer: Lithosphere provides our forests, grasslands for grazing land for agriculture, and human settlements. It is a rich source of minerals.
4. Name different types of water bodies.
Answer: Rivers, lakes, seas, oceans, etc.
5. How is the atmosphere important for us?
Answer: The atmosphere protects us from the harmful rays and heat of the sun.
6. Name some animals found in the deserts.
Answer: Camels, snakes, lizards, and insects.
7. What is a barter system?
Answer: The barter system is a method of trade in which goods are exchanged without the use of money.
8. Write the difference between the biotic and abiotic environments with examples.
The world of living organisms is known as the abiotic environment.
Example: plants and animals.
The world of the non-living elements is known as the abiotic environment.
9. How is the environment important for us?
Answer: It is important for us because it is the provider of air, water, food, and land— the basic necessities of life.
10. How have human beings adapted to the environment to fulfill their needs?
Answer: Human beings from the early times have been interacting with the environment and modifying it according to their needs. Early humans adapted themselves to their natural surroundings. They led a simple life and fulfilled their requirements from the nature around them. But their needs kept on increasing. They became varied also. To fulfill these varied needs, humans learned to grow crops, tamed animals, and began a settled life.
The wheel was invented, surplus food was produced, the barter system emerged, trade started and commerce developed. The industrial revolution made possible large-scale production. By and by transportation became faster. The information revolution made communication easier and speedy across the world. In this way, human beings adapted to the environment to fulfill their needs.
11. Define (a) Lithosphere (b) Atmosphere (c) Hydrosphere (d) Biosphere
(a) Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals and covered by a thin layer of soil. It provides us with forests, grasslands, and land. It is a source of minerals.
(b) Atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from harmful rays and the scorching heat of the sun. It consists of various gases, dust, and water vapor.
(c) Hydrosphere refers to various water bodies such as rivers, lakes, seas, oceans, etc. that exist on the earth.
(d) Biosphere or the living world is comprised of plant and animal kingdoms. It is a narrow zone of the earth where land, water, and air interact with each other to support life.