1 00:00:00,110 --> 00:00:08,509 Humans, plants, and animals all need water in order to survive. There are many different ways 2 00:00:08,509 --> 00:00:14,630 to obtain water but the most important one and where water initially comes from is called the 3 00:00:14,630 --> 00:00:22,390 water cycle. The water cycle is a process in which water is naturally circulated from earth into the 4 00:00:22,390 --> 00:00:28,750 atmosphere and back to the earth. There are four important steps that make up this process and 5 00:00:28,750 --> 00:00:40,030 and they are evaporation condensation precipitation and collection the first step of the water cycle 6 00:00:40,030 --> 00:00:47,469 is called evaporation evaporation occurs when the liquid from a body of water is heated up 7 00:00:47,469 --> 00:00:56,350 and turns into a water vapor which is also known as a gas from there this water vapor condenses 8 00:00:56,350 --> 00:01:04,510 and forms clouds this step is called condensation and during this stage the water vapor turns back 9 00:01:04,510 --> 00:01:12,750 into a liquid the third step is called precipitation during this stage the water falls 10 00:01:12,750 --> 00:01:20,989 from the clouds as either a liquid or a solid and temperature determines this when it is hotter the 11 00:01:20,989 --> 00:01:26,870 precipitation falls in the form of a liquid and when it is colder it falls in 12 00:01:26,870 --> 00:01:34,430 the form of a solid. Some examples of precipitation can include rain, snow, and 13 00:01:34,430 --> 00:01:45,890 hail. The final step of the water cycle is called collection. Collection occurs 14 00:01:45,890 --> 00:01:52,109 when the liquid or solid precipitation falls from the clouds to the ground. This 15 00:01:52,109 --> 00:01:57,250 This water collects in oceans, seas, lakes, and other bodies of water. 16 00:01:58,170 --> 00:02:02,870 This water can even be absorbed in the ground to form underground water. 17 00:02:04,510 --> 00:02:13,849 From here, the process goes back to the first stage and is repeated in full through to step number four over and over again. 18 00:02:14,169 --> 00:02:20,750 In order for this cycle to be carried out, we have to have heat from the sun and also gravity. 19 00:02:20,750 --> 00:02:25,889 Otherwise, the water would not be able to fall from the sky.