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NCERT Solutions for Class 7 Science Chapter 8: Winds, Storms and Cyclones

iacst-2022

In class 6, it was established that moving air is called wind. Class 7 builds its content upon the concepts learnt in class 6 by conducting various experiments and showing how the air around us affects us. Terms like Hurricane, Tornado, Typhoon, and Thunderstorm have been introduced. Students are advised to understand the science behind the climate change for this chapter is studied in great detail in the subject of geography. The following are a few important concepts that one gathers from the chapter:

  • The air around us exerts pressure. It expands on heating and contracts on cooling.
  • The moving air is called wind. Uneven heating on the earth is the main cause of wind movements.
  • Winds carrying water vapour bring rain. High-speed winds and air pressure difference can cause cyclones.
  • Satellites and radars are used to monitor cyclones.
  • A cyclone is known by different names in different parts of the world. It is called a 'hurricane' in the American continent. In the Philippines and Japan, it is called a 'typhoon'.
  • A tornado looks like a dark funnel-shaped cloud that reaches from the sky to the ground.

 

 

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Also See
Chapter 1 Nutrition in Plants Chapter 2 Nutrition in Animals Chapter 3 Fiber to Fabric
Chapter 4 Heat Chapter 5 Acids, Bases and Salts Chapter 6 Physical and Chemical Changes
Chapter 7 Weather, Climate and Adaptations of Animals to Climate Chapter 9 Soil Chapter 10 Respiration in Organisms
Chapter 11 Transportation in Animals and Plants Chapter 12 Reproduction in Plants Chapter 13 Motion and Time
Chapter 14 Electric Current and its Effects Chapter 15 Light Chapter 16 Water: A Precious Resource
Chapter 17 Forests: Our Lifeline Chapter 18 Wastewater Story

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