WEBVTT 00:00:07.583 --> 00:00:11.083 An exciting playground on top of a hill. 00:00:11.083 --> 00:00:15.166 Phew! It's so hard to go up. 00:00:15.166 --> 00:00:19.125 Maybe there's a way to go up at once. 00:00:19.125 --> 00:00:24.083 I can't ride a bike. It has to fly like a rocket! 00:00:24.083 --> 00:00:29.375 Right! I need a rocket bike. 00:00:29.375 --> 00:00:33.791 So how do I make it? 00:00:33.791 --> 00:00:37.916 Maybe Mrs. Curiosity knows how. 00:00:37.916 --> 00:00:43.625 Mrs. Curiosity is a scientist. 00:00:43.625 --> 00:00:46.500 She studies pieces that are smaller than a booger, 00:00:46.500 --> 00:00:49.750 and divided into thousands. 00:00:49.750 --> 00:00:54.291 She has lots of skills - 00:00:54.291 --> 00:00:59.541 fixing a broken machine is easy for her. 00:00:59.541 --> 00:01:02.625 She even opens up other things 00:01:02.625 --> 00:01:05.791 because she is so curious. 00:01:05.791 --> 00:01:08.208 But why? 00:01:08.208 --> 00:01:11.000 Why is the 00:01:11.000 --> 00:01:13.833 screen black? 00:01:13.833 --> 00:01:16.666 Why? 00:01:16.666 --> 00:01:20.166 Why are 2,870 cans stacked 00:01:20.166 --> 00:01:21.458 into a shape of 00:01:21.458 --> 00:01:24.083 pyramid? 00:01:24.083 --> 00:01:27.208 She solves difficult calculations and 00:01:27.208 --> 00:01:29.625 counts the number of cans 00:01:29.625 --> 00:01:32.500 easily. 00:01:32.500 --> 00:01:34.750 Why? 00:01:34.750 --> 00:01:38.291 Why is the tree tilted? 00:01:38.291 --> 00:01:40.583 Oh, a mole has dug up 00:01:40.583 --> 00:01:43.125 the ground! 00:01:43.125 --> 00:01:46.000 Mrs. Curiosity is curious 00:01:46.000 --> 00:01:49.166 about little things that most people don't care about. 00:01:49.166 --> 00:01:53.375 She examines them, thinks about them, 00:01:53.375 --> 00:01:56.208 and finds out why. 00:01:56.208 --> 00:02:00.583 Yeah. Let's ask Mrs. Curiosity! 00:02:00.583 --> 00:02:02.625 Why are you 00:02:02.625 --> 00:02:04.000 trying to make 00:02:04.000 --> 00:02:06.833 a rocket bike? 00:02:06.833 --> 00:02:08.333 Because it's hard to 00:02:08.333 --> 00:02:11.458 go up to the playground. 00:02:11.458 --> 00:02:15.541 But rockets and bikes are 00:02:15.541 --> 00:02:18.625 expensive. 00:02:18.625 --> 00:02:20.791 I can look for treasures. 00:02:20.791 --> 00:02:24.166 There are lots of treasures underground. 00:02:24.166 --> 00:02:27.083 Yes. 00:02:27.083 --> 00:02:29.125 There are jewels and 00:02:29.125 --> 00:02:30.791 gold. 00:02:30.791 --> 00:02:33.458 It'll be 00:02:33.458 --> 00:02:36.833 awesome! 00:02:36.833 --> 00:02:41.416 The scientists that study the movement of nature and outer space 00:02:41.416 --> 00:02:47.333 are called physicists. 00:02:47.333 --> 00:02:52.541 Mrs. Curiosity and I looked through the whole town. 00:02:52.541 --> 00:02:58.166 We'll be rich if we find jewels and gold. 00:02:58.166 --> 00:03:03.541 We examined the soil and rocks wherever we went. 00:03:03.541 --> 00:03:10.791 Sometimes, we found strange objects. 00:03:10.791 --> 00:03:12.541 What's this? 00:03:12.541 --> 00:03:16.041 Is it a dinosaur bone? 00:03:16.041 --> 00:03:18.458 Maybe dinosaurs 00:03:18.458 --> 00:03:21.166 used to live in our town. 00:03:21.166 --> 00:03:23.750 Scientists that study what's underground 00:03:23.750 --> 00:03:26.625 and what soil and rocks are made of 00:03:26.625 --> 00:03:32.583 are called geologists. 00:03:32.583 --> 00:03:36.916 We took everything that seemed strange. 00:03:36.916 --> 00:03:39.250 We examined the bugs in the soil 00:03:39.250 --> 00:03:42.375 with microscopes. 00:03:42.375 --> 00:03:45.708 But why? 00:03:45.708 --> 00:03:47.291 Why can't I see any gold mine 00:03:47.291 --> 00:03:51.250 bugs? 00:03:51.250 --> 00:03:53.500 What's a gold mine 00:03:53.500 --> 00:03:56.250 bug? 00:03:56.250 --> 00:03:58.375 It's a bug that lives in 00:03:58.375 --> 00:04:02.875 places where gold is found. 00:04:02.875 --> 00:04:05.458 Scientists who study living things are 00:04:05.458 --> 00:04:09.666 called biologists. 00:04:09.666 --> 00:04:12.625 Then, we roasted the soil and rocks 00:04:12.625 --> 00:04:16.208 on a large saucepan, one by one. 00:04:16.208 --> 00:04:18.375 But why? 00:04:18.375 --> 00:04:19.625 Why can't I see 00:04:19.625 --> 00:04:22.416 anything? 00:04:22.416 --> 00:04:24.166 What did you expect to 00:04:24.166 --> 00:04:26.500 see? 00:04:26.500 --> 00:04:29.416 When soil or rocks mixed with gold are roasted, 00:04:29.416 --> 00:04:32.916 the gold melts and comes out. 00:04:32.916 --> 00:04:37.999 It's because gold melts even at low temperature. 00:04:37.999 --> 00:04:40.250 If roasting doesn't work, 00:04:40.250 --> 00:04:41.750 let's try 00:04:41.750 --> 00:04:45.333 boiling it. 00:04:45.333 --> 00:04:48.250 Scientists who study what substances are made of, 00:04:48.250 --> 00:04:51.541 what characteristics they have and how they change, 00:04:51.541 --> 00:04:57.375 are called chemists. 00:04:57.375 --> 00:05:00.958 But still, there was no gold. 00:05:00.958 --> 00:05:04.750 I don't think we would find any treasure. 00:05:04.750 --> 00:05:07.916 I was walking down the street feeling disappointed and 00:05:07.916 --> 00:05:12.291 found an old bike that's been thrown away! 00:05:12.291 --> 00:05:18.166 It was broken in many parts. 00:05:18.166 --> 00:05:21.791 But it was no problem. 00:05:21.791 --> 00:05:26.083 Mrs. Curiosity could fix this easily. 00:05:26.083 --> 00:05:28.999 Mrs. Curiosity and I cleaned the bike 00:05:28.999 --> 00:05:33.291 and fixed it. 00:05:33.291 --> 00:05:37.041 Mrs. Curiosity and I 00:05:37.041 --> 00:05:39.625 made a new bike 00:05:39.625 --> 00:05:41.958 again and 00:05:41.958 --> 00:05:46.666 again. 00:05:46.666 --> 00:05:50.791 Now, we just needed to attach a rocket. 00:05:50.791 --> 00:05:52.875 A balloon rocket! 00:05:52.875 --> 00:05:55.999 A balloon rocket? 00:05:55.999 --> 00:05:58.125 How? 00:05:58.125 --> 00:06:02.125 I'm not sure. Try to think about it. 00:06:02.125 --> 00:06:05.916 I have to go to work now. 00:06:05.916 --> 00:06:07.291 How do I make a rocket 00:06:07.291 --> 00:06:09.583 with a balloon? 00:06:09.583 --> 00:06:14.125 After thinking again 00:06:14.125 --> 00:06:16.208 and again, 00:06:16.208 --> 00:06:18.458 I finally came up with a 00:06:18.458 --> 00:06:20.666 balloon rocket! 00:06:20.666 --> 00:06:21.833 00:06:21.833 --> 00:06:27.458 Balloon, tongs, paper, scissors, tape 00:06:27.458 --> 00:06:31.833 Blow the balloon to a large size and 00:06:31.833 --> 00:06:34.916 block its opening with the tongs. 00:06:34.916 --> 00:06:36.125 Make a cone shape with 00:06:36.125 --> 00:06:38.125 the paper and 00:06:38.125 --> 00:06:42.208 attach it on one side of the 00:06:42.208 --> 00:06:44.583 balloon with the tape. 00:06:44.583 --> 00:06:46.625 When you release the tongs, 00:06:46.625 --> 00:06:49.583 the balloon rocket will be launched! 00:06:49.583 --> 00:06:51.291 Whoosh! 00:06:51.291 --> 00:06:54.791 Finally, the balloon rocket bike was ready! 00:06:54.791 --> 00:06:57.916 I attached a long string on the tongs blocking the 00:06:57.916 --> 00:07:02.458 the balloon's mouth and tied it on a tree. 00:07:02.458 --> 00:07:04.208 When I ride the bike, 00:07:04.208 --> 00:07:06.125 the tongs will be released 00:07:06.125 --> 00:07:08.958 and the balloon rocket will be launched. 00:07:08.958 --> 00:07:14.250 Then, the bike will fly into the air! 00:07:14.250 --> 00:07:17.958 "Let's go to the playground!" 00:07:17.958 --> 00:07:23.416 I pedaled hard and the balloon rocket 00:07:23.416 --> 00:07:28.208 blasted wind. 00:07:28.208 --> 00:07:30.708 Whoosh! 00:07:30.708 --> 00:07:33.333 But… Oh, dear. 00:07:33.333 --> 00:07:37.291 The balloon shrunk in a few seconds 00:07:37.291 --> 00:07:40.291 and I fell on the ground. 00:07:40.291 --> 00:07:41.916 Why? 00:07:41.916 --> 00:07:44.541 Why did this happen? 00:07:44.541 --> 00:07:51.291 Right. It's because the balloon rocket was too weak. 00:07:51.291 --> 00:07:54.291 I failed this time, 00:07:54.291 --> 00:07:58.291 but I’ll make the rocket bike one day! 00:07:58.291 --> 00:08:02.458 I'll become a scientist and make a real rocket bike 00:08:02.458 --> 00:08:05.875 that flies into the galaxy.