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Science / Our Environment

Science / Our Environment

Air is mixture of gases like oxygen, nitrogen, carbon dioxide, water vapor and inert or noble gases. It is a transparent medium, invisible, tasteless and odourless.
Air is a natural resource and essential for the survival of living organisms.
The earth is surrounded by a thick envelope of air called atmosphere which extends up to 200 kilometers into space.
Learn about air, its composition, atmosphere, perform different activities to understand the characteristics of air and air pollution.

Forests are regions covered with dense trees and vegetation. Forests are homes of wild animals and birds. Forests are very important for all living beings.
Forest keep the air clean, help in water cycle and is a shelter of wild animals and birds.
Cutting down forests is harmful in many ways.

Exercises
Lessons
Topics
Exercises
Lessons
Topics
  • Environment - SmartTest

    Atmosphere - What is in the atmosphere, The atmosphere protects life, What does air contain, Properties of air.

    • Accessed by: 107 Students
    • Average Time: 00:04:46
    • Average Score: 44.82
    • Questions: 185

    Natural Calamities - SmartTest

    A SmartTest on Natural Calamities

    • Accessed by: 268 Students
    • Average Time: 00:07:19
    • Average Score: 53.23
    • Questions: 12

    Interdependence in Nature - SmartTest

    A SmartTest on Interdependence in Nature

    • Accessed by: 185 Students
    • Average Time: 00:03:33
    • Average Score: 55.00
    • Questions: 26

    Talking about our Environment - SmartTest

    A SmartTest on Talking about our Environment

    • Accessed by: 185 Students
    • Average Time: 00:04:57
    • Average Score: 53.17
    • Questions: 29

    Atmosphere - SmartTest

    A SmartTest on Atmosphere

    • Accessed by: 353 Students
    • Average Time: 00:04:34
    • Average Score: 63.59
    • Questions: 11

    Water - SmartTest

    A SmartTest on Water

    • Accessed by: 372 Students
    • Average Time: 00:03:18
    • Average Score: 63.29
    • Questions: 26

    Soil Erosion and Conservation - SmartTest

    A SmartTest on Soil Erosion and Conservation

    • Accessed by: 256 Students
    • Average Time: 00:06:28
    • Average Score: 58.94
    • Questions: 25
    • Natural Calamities
    • Interdependence in Nature
    • Talking about our Environment
    • Soil Erosion and Conservation
    • Pollution
  • Our Environment -- Summary

    Learnhive Lesson on Our Environment

    • Accessed by: 601 Students

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