renewable resources of energy.docx

**Renewable Resources of Energy :** They are natural resources that are replaced (renewed) In a faster rate than that of being consumed. - **Windmill** **They** **were used to crush graine to make flour.** **Way of working** 1. The wind moves the mill\'s Blades 2. The kinetic energy trans...

**Renewable Resources of Energy :** They are natural resources that are replaced (renewed) In a faster rate than that of being consumed. - **Windmill** **They** **were used to crush graine to make flour.** **Way of working** 1. The wind moves the mill\'s Blades 2. The kinetic energy transfers to The internal parts of the mill. - **Watermill** They were used to crush graine to make flour. Way of working 1. The water moves the mill\'s Blades. 2. The kinetic energy transfers to the internal parts of the mill. **Importance** They are used to crush (grind) grains and make flour. **Advantages** Renewable energy resources. Low cost **Disadvantages** Sometimes, the water supply may Dry up, so it can\'t do its main job. Sometimes the wind doesn\'t Blow, so it can\'t do its main job. **Modern turbines** are used now instead of **old windmills.** Modem Wind Turbines **Function** They are used to generate Electricity. **Shape** They are taller than windmills. They have fewer blades than Windmills. They have no opening in their blades. Old windmills. **Function** They are used to grind the grains To make flour. **Shape** They are shorter than wind turbines. They have more blades than wind Turbines. They have openings in their blades. **Similarity** They depend on the kinetic energy of wind to be operated.