What We Will Cover in the Chapter

Last updated at July 13, 2026 by

In this chapter we learn what pressure is, how liquids and air exert pressure, how pressure differences make winds blow, and how storms, thunderstorms and cyclones form.

Understanding the Name of the Chapter

Pressure
The force acting on each unit of area.
Winds
Moving air, caused by pressure differences.
Storms
Strong winds with rain, thunder and lightning.
Cyclones
Huge spinning storms over warm oceans.
What does the name of this chapter tell us?
  • It starts with pressure — force spread over an area.
  • Pressure differences in air make winds blow.
  • Strong winds with rain and lightning become storms.
  • The most powerful spinning storms are cyclones.

Topics We Will Study in This Chapter

Topics We Will Study
Intro Introduction 6.1 Pressure 6.2 Pressure Exerted by Air 6.3 Formation of Wind 6.4 High-Speed Winds Lower Air Pressure 6.5 Storms, Thunderstorms, and Lightning 6.6 Cyclone
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