1 00:00:01,010 --> 00:00:03,009 3. 2 00:00:03,009 --> 00:00:09,009 Watch the descriptions of renewable energy sources in your notebook. 3 00:00:09,009 --> 00:00:11,009 Right. 4 00:00:11,009 --> 00:00:16,010 A. Electricity is produced by kinetic energy from moving water. 5 00:00:16,010 --> 00:00:18,010 What do you think? 6 00:00:18,010 --> 00:00:21,010 A is? 7 00:00:21,010 --> 00:00:25,010 Hydroelectric. 8 00:00:25,010 --> 00:00:29,010 Good. Hydroelectric. 9 00:00:29,010 --> 00:00:39,009 B. Solar panels drop energy from the sun and are transformed into electrical energy. 10 00:00:39,009 --> 00:00:40,009 What do you think? 11 00:00:40,009 --> 00:00:41,009 Solar. 12 00:00:41,009 --> 00:00:52,009 C. The blades move turbines which transform kinetic energy into electrical energy. 13 00:00:52,009 --> 00:00:54,009 What do you think? 14 00:00:54,009 --> 00:00:57,009 What do you think? 15 00:00:57,009 --> 00:01:02,579 Okay, we're going to leave it here. 16 00:01:02,579 --> 00:01:06,200 Energy from the movement of waves is transformed... 17 00:01:06,200 --> 00:01:19,670 Energy from the movement of waves is transformed into electrical energy. 18 00:01:23,090 --> 00:01:23,930 Tidal. 19 00:01:25,829 --> 00:01:27,049 Like tides, remember. 20 00:01:28,269 --> 00:01:28,530 E. 21 00:01:29,989 --> 00:01:35,109 Chemical energy from plants and animals is transformed into electrical energy. 22 00:01:35,209 --> 00:01:35,790 What do you think? 23 00:01:36,030 --> 00:01:58,780 Thermal energy inside the earth is transformed into electrical energy, we think geothermal. 24 00:01:58,780 --> 00:02:06,200 The blades, see, the blades move turbines which transform kinetic energy into electrical 25 00:02:06,200 --> 00:02:21,719 energy. Alright? Perfect. Number five. Use chemical energy, electrical energy into thermal 26 00:02:21,719 --> 00:02:50,699 energy. B is potential energy into energy, right? Okay. Six. Which is the best site? 27 00:02:50,699 --> 00:02:57,900 What do you think is the best site to set or to build a wind farm near here? What do 28 00:02:57,900 --> 00:02:59,900 What do you think? 29 00:02:59,900 --> 00:03:01,900 In the country, right? 30 00:03:01,900 --> 00:03:03,900 The country felt, right? 31 00:03:03,900 --> 00:03:05,900 Not in the school. 32 00:03:05,900 --> 00:03:07,900 Yes, in the mall. 33 00:03:07,900 --> 00:03:09,900 Right? 34 00:03:09,900 --> 00:03:11,900 B. Other sites that should definitely 35 00:03:11,900 --> 00:03:13,900 not be used. 36 00:03:13,900 --> 00:03:15,900 Buildings. 37 00:03:20,680 --> 00:03:22,680 And C. 38 00:03:22,680 --> 00:03:24,680 What can you tell nature lovers and bird lovers? 39 00:03:24,680 --> 00:03:26,680 What do you think? 40 00:03:26,680 --> 00:03:30,509 You can tell them 41 00:03:30,509 --> 00:03:39,949 that these are renewable energy and it doesn't pollute okay it doesn't 42 00:03:42,430 --> 00:03:53,469 pollute at all okay um number seven i think it would be correct because you haven't 43 00:03:53,469 --> 00:04:00,509 walking there so the only thing that we had to add it was just your personal notes 44 00:04:00,509 --> 00:04:07,389 that i'm gonna have later so now um please copy this and we're going to 45 00:04:08,590 --> 00:04:17,790 oh no first first we're going to practice orally we're going to practice orally and later you copy 46 00:04:17,790 --> 00:04:19,889 ready, steady, go 47 00:04:19,889 --> 00:04:24,470 I have some questions 48 00:04:24,470 --> 00:04:25,410 don't copy now 49 00:04:25,410 --> 00:04:27,069 I have some questions for you now 50 00:04:27,069 --> 00:04:28,550 right 51 00:04:28,550 --> 00:04:33,959 ready 52 00:04:33,959 --> 00:04:36,779 steady, go 53 00:04:36,779 --> 00:04:39,420 well 54 00:04:39,420 --> 00:04:44,519 there are two states 55 00:04:44,519 --> 00:04:45,980 of energy 56 00:04:45,980 --> 00:04:50,680 this area presents in an object 57 00:04:50,680 --> 00:04:52,720 due to its position, what do you think it is? 58 00:04:53,860 --> 00:04:57,439 potential, great, it is found in moving objects 59 00:04:57,439 --> 00:05:00,120 it is also called energy of motion, is that? 60 00:05:00,939 --> 00:05:03,560 kinetic, the energy 61 00:05:03,560 --> 00:05:07,860 of an object due to its position of motion 62 00:05:07,860 --> 00:05:12,279 so the sum of potential and kinetic is 63 00:05:12,279 --> 00:05:14,759 mechanical, great guys 64 00:05:14,759 --> 00:05:19,019 What are the four main properties of energy? 65 00:05:20,019 --> 00:05:34,360 Energy can be stored, can be transferred, can be transported, and can be transformed. 66 00:05:36,199 --> 00:05:39,959 Energy can be transferred, there are the four main properties of energy. 67 00:05:39,959 --> 00:05:53,779 It can be transferred from one place to another, it can be stored, it can be used in another way, and energy can be transported from one place to another as well. 68 00:05:53,779 --> 00:06:05,720 So it can be transferred, it can be changed, transported, it can be from one place to another, and transformed, it can be changed, okay? 69 00:06:05,720 --> 00:06:18,139 Okay, so, sorry because I say transfer change, no, transfer is moving, you can move it, and transported is just like, it's in a place, and it can be used in another, okay? 70 00:06:18,620 --> 00:06:27,000 The difference between transferred and transported is like transferred, you can move something from one place to another, and it's the same thing, right? 71 00:06:27,000 --> 00:06:36,660 But in transporting, if you transport it through the electricity facilities or through the energy, right? 72 00:06:37,879 --> 00:06:41,240 The energy can be transported by change, okay? 73 00:06:41,839 --> 00:06:42,639 Like in the poetry. 74 00:06:46,110 --> 00:06:46,750 Okay. 75 00:06:47,589 --> 00:06:53,250 Tell me, the main advantages and disadvantages of non-renewable energy sources. 76 00:06:53,449 --> 00:06:54,069 So, advantages. 77 00:06:55,189 --> 00:06:56,790 Of renewables. 78 00:06:56,790 --> 00:07:02,689 Renewable, non-renewable energy sources, like fossil fuels, fossil fuels, I am thinking. 79 00:07:03,949 --> 00:07:12,319 Only to... 80 00:07:12,319 --> 00:07:13,480 To store, right? 81 00:07:13,639 --> 00:07:14,000 Yes. 82 00:07:14,259 --> 00:07:16,920 It's easy to store. Great. Three more. 83 00:07:22,319 --> 00:07:24,379 It's easy to transport. 84 00:07:25,199 --> 00:07:27,519 It's easy to transport. More. 85 00:07:27,519 --> 00:07:27,600 More. 86 00:07:29,420 --> 00:07:30,279 Another difference? 87 00:07:30,279 --> 00:07:41,850 Remember, it's available when we need it, and it can be used in many different ways, okay? 88 00:07:41,850 --> 00:07:44,850 Four disadvantages. 89 00:07:44,850 --> 00:07:52,079 Smoke. 90 00:07:52,079 --> 00:07:57,079 Smoke, yes. They produce smoke with the water. 91 00:07:57,079 --> 00:07:58,740 It's a no. 92 00:08:00,740 --> 00:08:03,779 The nuclear plants are very expensive. 93 00:08:04,339 --> 00:08:07,860 They can cause oil leaks. 94 00:08:10,740 --> 00:08:13,180 They can cause air pollution. 95 00:08:13,939 --> 00:08:18,540 And they will run out one day. 96 00:08:19,459 --> 00:08:21,939 Yes, they will run out one day as well. 97 00:08:21,939 --> 00:08:28,360 Nuclear energy, advantages and disadvantages. 98 00:08:28,899 --> 00:08:31,980 Advantages of nuclear energy. 99 00:08:33,580 --> 00:08:37,759 The production of nuclear energy doesn't pollute. 100 00:08:39,379 --> 00:08:42,139 The nuclear energy is cheap to produce. 101 00:08:43,039 --> 00:08:47,820 The very small amount of uranium produces large amounts of energy. 102 00:08:47,820 --> 00:08:49,600 That means that we have this. 103 00:08:49,600 --> 00:08:58,980 Disadvantages. Nuclear power plants are very expensive, right? 104 00:09:02,980 --> 00:09:10,980 Nuclear waste is highly contaminating, and nuclear waste needs hundreds of years to stop being radioactive. 105 00:09:10,980 --> 00:09:16,980 Okay, tell me the negative consequences of burning fossil fuels. 106 00:09:16,980 --> 00:09:22,159 the advantages 107 00:09:22,159 --> 00:09:24,720 no, the negative consequences 108 00:09:24,720 --> 00:09:25,659 of burning 109 00:09:25,659 --> 00:09:27,000 fossil fuels 110 00:09:27,000 --> 00:09:29,200 I told you 111 00:09:29,200 --> 00:09:32,740 thermal warming 112 00:09:32,740 --> 00:09:33,879 yes 113 00:09:33,879 --> 00:09:35,580 the thermal energy 114 00:09:35,580 --> 00:09:37,860 from the sun is absorbed 115 00:09:37,860 --> 00:09:40,539 by the surface of the earth 116 00:09:40,539 --> 00:09:42,279 some sunlight 117 00:09:42,279 --> 00:09:44,379 returns to the space 118 00:09:44,379 --> 00:09:46,639 some heat is naturally retained 119 00:09:46,639 --> 00:09:47,419 when it houses 120 00:09:47,419 --> 00:09:51,679 and all the rates of the temperatures. 121 00:09:52,860 --> 00:09:56,600 The burning of fossil fuels releases high levels of carbon dioxide, 122 00:09:56,840 --> 00:10:04,720 so it means that we need oxygen and a large amount of carbon dioxide 123 00:10:04,720 --> 00:10:13,250 that can be really useful for our animals and any other ecosystem. 124 00:10:13,250 --> 00:10:30,649 So, carbon dioxide and other gases are in the layer on the planet, that's not good, and what we said about global warming. 125 00:10:30,649 --> 00:10:35,649 Four consequences of global warming. 126 00:10:35,649 --> 00:10:40,649 The consequences of global warming. 127 00:10:40,649 --> 00:10:45,649 It can damage animal habitats, which means that it can disappear and stink. 128 00:10:45,649 --> 00:10:53,649 It can damage the, how do you say, the other crops and the folks. 129 00:10:53,649 --> 00:10:58,649 Also, the weather conditions can damage it as well. 130 00:10:58,649 --> 00:11:03,649 It can lead to some animals, some plants to die. 131 00:11:03,649 --> 00:11:06,649 The plants of the sea? 132 00:11:06,649 --> 00:11:08,649 Yes, the sea plants. 133 00:11:08,649 --> 00:11:12,649 And we have the warmer oceans that we were talking about. 134 00:11:12,649 --> 00:11:14,649 And rising sea levels become... 135 00:11:14,649 --> 00:11:16,649 Rising sea levels become... 136 00:11:16,649 --> 00:11:18,649 Okay, this is the... 137 00:11:18,649 --> 00:11:20,649 This is the exam. 138 00:11:20,649 --> 00:11:22,649 Please try to pass. 139 00:11:22,649 --> 00:11:24,649 Is there any doubt? 140 00:11:24,649 --> 00:11:25,649 No. 141 00:11:25,649 --> 00:11:27,509 No? Well, it's not enough.