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The water cycle
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- 2. What is this“Water Cycle”? • The water cycle, also known as the hydrological cycle or the, describes the continuous movement of water on, above and below the surface of the Earth.
- 3. What Drives theWater Cycle? • The Sun is what drives the water cycle due to its release of heat making water all over the world evaporate , and thus , repeating the water cycle over and over again.
- 4. Let’s Play aGame! YOU GET TO GUESS THE SCRAMBLED WORDS •NVAPOARIOTE
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- 8. Let’s continue the lesson Thanksfor your cooperation
- 9. The Water Cycle: How It Works • Now we know that the Sun is what makes the Water Cycle work and continue to repeat over and over again. But is it really just evaporation responsible for the water cycle?
- 10. The Water Cycle: How it Works • Actually , there are 3 more processes involved in the Water Cycle , and they are : • Condensation • Precipitation
- 11. The Water Cycle: How It Works • Now we know the four processes of the Water Cycle. • But do we know what do these processes do? • Shall we find out?
- 12. The Processes ofthe Water Cycle Evaporation >Transpiration Condensation Precipitation
- 13. Evaporation • Evaporation isa type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. • In other words , Evaporation is when the water “Dries Up” and turns it water vapor in the form a gas. Since pure water is almost the only substance that can evaporate , the solutes are always left behind. • For example , the Dead Sea is so dense that you’ll naturally float on it. That is because of the high concentration of sunlight in the area and that is the reason so many salt particles are left behind.
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- 15. Transpiration • Some people havebeen asking this question frequently , “Do plants sweat too?,” • Well , they do. This process is called Transpiration.
- 16. Transpiration • Plants absorbwater from the soil. Each plant will use the water that it needs to help it grow. As extra water travels through the plant and to its leaves, it is pulled out and evaporated into the air. This process is called transpiration • Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. • Transpiration is a sub- process of Evaporation
- 17. Transpiration • This photoshows the evidence of transpiration on plants.
- 18. Condensation • Have youever experienced when the drinking glass gets covered by moisture even though you didn’t accidentally pour water outside the glass?
- 19. Condensation • Well ,they don’t actually “sweat” like plants , it’s because they attract moisture. It came from the air! Water vapor in the air became cooler when it touched the cold glass, causing it to became liquid again!
- 20. Condensation • Condensation is thechange of the physical state of matter from gas phase into liquid phase, and is the reverse of evaporation.
- 21. Precipitation • Somethings are justreally hard to hold on , right? • Well , that’s why we need to let go.
- 22. Precipitation • We get precipitation whenso much condensed water has become too heavy for the atmosphere to hold on to.
- 23. Precipitation • The cloudsget so packed with water molecules that they become heavy and much colder. As the evaporation cools it turns back into water and falls down to the ground.
- 24. PRECIPITATION COMES INMANY DIFFERENT FORMS RAIN SNOW HAIL SLEET
- 25. Let’s Test YourKnowledge •1. What are the 3 main processes of the Water Cycle?
- 26. •2. What processof the Water Cycle involves the water “Drying Up”
- 27. •3.What process ofthe Water Cycle is the opposite of Evaporation?
- 28. •4. What arethe four types of precipitation?
- 29. •5. It Drives theWater Cycle