Can you think of more examples where we use the Sun, the wind or the flowing water?
More examples of using the Sun, wind, and flowing water include:
Sun — solar panels to generate electricity, solar cookers to cook food, solar water heaters to heat water, drying grains and spices, and growing plants for food.
Wind — windmills to pump water, windmills to generate electricity, sailing boats for transportation, and flying kites.
Flowing water — water wheels to grind grain, hydroelectric dams to generate electricity, and irrigation systems to water crops.
Explanation
The chapter explains that the pinwheel rotated (wind energy), the paper burned (solar energy through magnifying glass), and the water wheel spun (water energy)—all showing that wind, Sun, and water are sources of energy. Ancient ships used wind energy to travel across seas.
Solution Steps
Sun energy can be used through solar panels for electricity, solar cookers for cooking, solar water heaters, drying grains and spices, and growing plants
Wind energy is harnessed through windmills for pumping water and generating electricity, sailing boats for transport, and flying kites
Flowing water energy is used via water wheels for grinding grain, hydroelectric dams for electricity, and irrigation systems for crops