CBSE Class 7 Science Our Environment Chapter 1 Environment Quiz

The atmosphere is held by the force of __________.

World Environment Day is celebrated in which month?

• January

• December

• September

• June

What is the topmost layer of the earth called?

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• Lithosphere
• Hydrosphere
• Atmosphere

• Biosphere

Why do animals and plants depend on each other?

• For entertainment

• For shelter

• For food and air

• For transportation

Which of these are not a threat to the environment?

• Growing population
  

• 
  Growing plants
  

• 
  Growing industries
  

• 
  All of these

Draw a flow chart of major components of the environment .

What is an ecosystem?

Define the terms biotic and abiotic.

Define the atmosphere. What is the significance of the atmosphere?

Man modifies his environment. Give reasons?