0:00:00.788,0:00:02.187 Hello everyone! 0:00:02.187,0:00:03.455 I am Yuhish Maharjan 0:00:03.455,0:00:04.792 I am 14 years old 0:00:04.792,0:00:05.988 I am from Nepal 0:00:05.988,0:00:07.868 I live in Lalitpur, Nepal 0:00:07.868,0:00:09.321 I am in grade 9 0:00:09.321,0:00:13.021 My school's name is West Wing secondary school 0:00:13.257,0:00:15.503 Today I am here to show you the experiment 0:00:15.503,0:00:18.485 named underwater candle experiment 0:00:18.485,0:00:21.872 In this experiment we can know how the 0:00:21.872,0:00:24.384 candle burns inside the water and we can 0:00:24.384,0:00:26.570 see the wick of the burning candle 0:00:28.101,0:00:29.035 Hello everyone! 0:00:29.035,0:00:31.036 Materials required for the experiment are 0:00:31.036,0:00:32.316 Lighter 0:00:33.519,0:00:35.816 Candle 0:00:36.665,0:00:41.430 Measuring tape 0:00:41.824,0:00:44.019 A glass of water 0:00:46.755,0:00:49.183 Small pin 0:00:50.986,0:00:52.886 Transparent bowl 0:00:58.590,0:01:01.539 First, stick the candle into the bowl 0:01:01.722,0:01:03.654 Do this by lighting the candle and 0:01:03.855,0:01:06.406 allowing the candle to drip into the bowl 0:01:06.587,0:01:09.686 Make sure that enough wax drip into the bowl 0:01:09.888,0:01:11.353 to make the candle stick 0:01:15.037,0:01:16.703 Once there is enough melted 0:01:16.836,0:01:18.346 candle wax in the bowl 0:01:18.455,0:01:20.381 stick the candle into it 0:01:23.079,0:01:25.781 Wait to dry for about five minutes 0:01:28.163,0:01:29.862 Next, pour water into the bowl 0:01:30.063,0:01:32.079 until just the top of the candle 0:01:32.330,0:01:34.229 You don't want the candle to be 0:01:34.380,0:01:36.558 fully submerged in the water at this point 0:01:45.406,0:01:47.838 After that, light the candle 0:01:48.138,0:01:50.555 My lighter is not working so I will be 0:01:50.704,0:01:52.704 using another candle to light this candle 0:02:01.390,0:02:04.292 Now, slowly watch as the candle burns 0:02:04.830,0:02:06.731 It will continue to burn even when the 0:02:06.914,0:02:09.196 wick is below water level 0:02:17.226,0:02:19.279 Sometimes, the candle dims and goes out 0:02:19.279,0:02:21.245 just before the candle dies 0:02:21.245,0:02:23.714 the water level rises almost 0:02:23.714,0:02:26.145 one 10th of the pitcher 0:02:26.145,0:02:28.278 No air bubbles have I seen 0:02:28.278,0:02:30.212 The water level stays up for 0:02:30.212,0:02:31.762 many few minutes more 0:02:32.006,0:02:33.760 We measure how far the candle 0:02:33.760,0:02:35.061 has burned down beneath 0:02:35.061,0:02:36.277 the surface of the water 0:02:36.277,0:02:38.609 Mine went down about 1,5 centimeters 0:02:38.817,0:02:40.594 That's all, this was my experiment 0:02:43.834,0:02:45.935 The conclusion of this experiment 0:02:45.935,0:02:47.058 goes like this 0:02:47.074,0:02:49.621 We can see that as the candle burns 0:02:49.819,0:02:51.793 A part of the wax surrounding the wick 0:02:51.793,0:02:52.772 does not melt 0:02:52.772,0:02:55.418 leaving a well of protection around the wick 0:02:55.822,0:02:58.438 This allows the candle to continue burning 0:02:58.438,0:03:00.087 even though the flame is already 0:03:00.087,0:03:01.671 lower than the water 0:03:01.937,0:03:04.110 Basically, the cool water surrounding 0:03:04.110,0:03:06.053 the candle is absorbing the heat 0:03:06.053,0:03:07.020 from the flame 0:03:07.020,0:03:09.270 This allows the wax to stay solid 0:03:09.270,0:03:10.836 instead of melting and dripping 0:03:10.836,0:03:13.019 on its sides like it normally does 0:03:13.019,0:03:14.556 and that is how the candle can 0:03:14.556,0:03:15.593 keep burning 0:03:15.593,0:03:17.337 That is all for my experiment! 0:03:17.337,0:03:18.284 Thank you!