1 00:00:06,541 --> 00:00:07,541 Ta-da! 2 00:00:15,875 --> 00:00:17,041 -Answer Time -Answer Time! 3 00:00:17,125 --> 00:00:18,291 -Answer Time -Answer Time! 4 00:00:18,375 --> 00:00:20,791 -It's StoryBots: Answer Time -Answer Time! 5 00:00:20,875 --> 00:00:23,375 They live in your computer And they've got a job to do 6 00:00:23,458 --> 00:00:25,750 They're all about learning And they make it fun too 7 00:00:25,833 --> 00:00:28,166 -And when you have a question -They'll answer it for you 8 00:00:28,250 --> 00:00:30,125 It's StoryBots: Answer Time 9 00:00:31,291 --> 00:00:32,375 Answer Time! 10 00:00:38,333 --> 00:00:40,416 -Hey, there! -How's it going? 11 00:00:41,000 --> 00:00:44,500 Hi, Beep. How many muscles are there in my body? 12 00:00:45,250 --> 00:00:49,291 Wow! There are over 600 muscles in the human body. 13 00:00:49,375 --> 00:00:52,458 In fact, it takes over 40 of them just to smile. 14 00:00:52,541 --> 00:00:53,916 Like this. 15 00:00:56,125 --> 00:00:58,666 Hi, Bo. Do you want to play hide and seek? 16 00:00:58,750 --> 00:01:01,000 Oh, I love hide and seek! 17 00:01:01,083 --> 00:01:03,291 One, two, three… 18 00:01:03,375 --> 00:01:04,625 We're starting! 19 00:01:05,125 --> 00:01:06,583 Four, five… 20 00:01:06,666 --> 00:01:07,791 Wait! No… 21 00:01:07,875 --> 00:01:09,583 Six, seven… 22 00:01:09,666 --> 00:01:12,083 -No. Over here! -Eight, nine, ten. 23 00:01:12,166 --> 00:01:13,250 Goodness! 24 00:01:13,333 --> 00:01:16,000 Where are you hiding? 25 00:01:16,083 --> 00:01:17,916 Hi there! 26 00:01:19,541 --> 00:01:21,375 I found you. 27 00:01:21,458 --> 00:01:24,166 Oh, yes. You got me! 28 00:01:24,250 --> 00:01:27,250 Well, that was fun. But also stressful. 29 00:01:27,333 --> 00:01:28,208 Boop. 30 00:01:28,708 --> 00:01:32,333 Linguine, pepperoncini, courgette, ham, Spam, clams… 31 00:01:32,416 --> 00:01:35,500 Whoa, Bang, you're on a roll with those answers. 32 00:01:36,208 --> 00:01:38,708 Nah, I wasn't answering questions. 33 00:01:38,791 --> 00:01:41,125 I was just ordering a burrito. 34 00:01:42,333 --> 00:01:44,791 You put all that on a burrito? 35 00:01:44,875 --> 00:01:47,958 Yeah, man. Variety is the spice of life. 36 00:01:48,458 --> 00:01:49,416 Want a bite? 37 00:01:55,500 --> 00:01:57,833 We've got a Level Three coming in. 38 00:01:59,625 --> 00:02:03,083 Hey, StoryBots. It's great to meet all of you. 39 00:02:03,166 --> 00:02:07,666 Holy… bananas! 40 00:02:07,750 --> 00:02:09,708 Are you seeing what I'm seeing? 41 00:02:09,791 --> 00:02:11,375 Boop! 42 00:02:11,875 --> 00:02:14,125 My name's Mr. Wonderful, 43 00:02:14,208 --> 00:02:18,500 and I have a little TV show called Mr. Wonderful's Land of Imagination. 44 00:02:18,583 --> 00:02:22,041 Oh, we know who you are, Mr. Wonderful. 45 00:02:22,125 --> 00:02:24,625 You're, like, totally our idol and stuff. 46 00:02:24,708 --> 00:02:26,875 Yeah. We grew up watching your show! 47 00:02:26,958 --> 00:02:30,416 I've seen all 905 episodes! Twice! 48 00:02:31,416 --> 00:02:33,750 StoryBots, you all are so kind. 49 00:02:33,833 --> 00:02:37,208 I wish I could sit and chat and get to know each of you, 50 00:02:37,291 --> 00:02:39,500 but I have a problem on my hands. 51 00:02:39,583 --> 00:02:42,916 We would do anything to help you, Mr. Wonderful. 52 00:02:43,000 --> 00:02:45,000 Yeah, what can we do for you? 53 00:02:45,083 --> 00:02:49,416 It seems that the magical door knocker to the Land of Imagination 54 00:02:50,000 --> 00:02:51,541 has fallen off. 55 00:02:52,666 --> 00:02:54,208 What?! 56 00:02:54,291 --> 00:02:56,500 If you can't use the magical door knocker-- 57 00:02:56,583 --> 00:02:59,083 You can't get into the Land of Imagination! 58 00:02:59,166 --> 00:03:02,791 And millions of kids will be totally disappointed and stuff! 59 00:03:03,708 --> 00:03:07,083 Yeah, we are in a little bit of a bind, StoryBots. 60 00:03:07,166 --> 00:03:11,250 What? The door knocker to the Land of Imagination has fallen off? 61 00:03:11,333 --> 00:03:14,583 The show starts in 17 minutes! What are we gonna do?! 62 00:03:16,708 --> 00:03:21,541 As you can see, everyone around here is a little upset. A little. 63 00:03:22,041 --> 00:03:25,791 You actually don't look that upset, Mr. Wonderful. 64 00:03:26,375 --> 00:03:28,791 Yeah, you know, it's kinda my thing. 65 00:03:29,291 --> 00:03:31,791 Have you tried to glue the door knocker back on? 66 00:03:31,875 --> 00:03:35,791 Actually, Bing, I did, but the glue didn't work. 67 00:03:35,875 --> 00:03:37,791 Boop boop, boop, boop boop! 68 00:03:37,875 --> 00:03:40,958 Exactly, Boop. If you can show me how glue works, 69 00:03:41,041 --> 00:03:43,208 then I can reattach the door knocker 70 00:03:43,291 --> 00:03:47,083 and get back to the Land of Imagination, and we'll have our show. 71 00:03:47,166 --> 00:03:50,833 Hey, my friend Emmett is super into making models, 72 00:03:50,916 --> 00:03:52,916 and he uses glue all the time. 73 00:03:53,000 --> 00:03:55,458 Maybe he can help us with how glue works. 74 00:03:55,541 --> 00:03:58,083 -Of course! -Emmett could totally help! 75 00:03:58,166 --> 00:04:00,125 That's a really good idea, Bang. 76 00:04:00,208 --> 00:04:03,541 I love it. And I sure would appreciate if you could help. 77 00:04:03,625 --> 00:04:05,791 There's only 15 minutes to showtime! 78 00:04:07,875 --> 00:04:09,083 And so would he. 79 00:04:09,583 --> 00:04:13,416 Don't worry, Mr. Wonderful. We are on the job. 80 00:04:16,541 --> 00:04:17,500 Answer time! 81 00:04:18,708 --> 00:04:23,541 Hey, StoryBots. How will I know what direction I'm going in? 82 00:04:25,083 --> 00:04:26,500 Do you feel lost? 83 00:04:28,083 --> 00:04:29,208 Directionless? 84 00:04:30,833 --> 00:04:34,041 Worried that you or a loved one are unable to navigate? 85 00:04:34,125 --> 00:04:36,541 I'm telling you, I know where I'm going. 86 00:04:37,583 --> 00:04:39,416 Well, now there's hope. 87 00:04:39,500 --> 00:04:42,166 Now, there's cardinal directions. 88 00:04:42,250 --> 00:04:44,250 With four primary directions, 89 00:04:44,333 --> 00:04:47,291 north, south, east, and west, 90 00:04:47,375 --> 00:04:50,083 you'll be able to find just about anything. 91 00:04:50,166 --> 00:04:52,833 There are many ways of guiding your direction, 92 00:04:52,916 --> 00:04:56,541 such as a compass, the sun, or even the stars in the sky. 93 00:04:56,625 --> 00:04:59,958 Full speed ahead, crew! Follow the North Star! 94 00:05:01,583 --> 00:05:03,666 Once you've found your orientation, 95 00:05:03,750 --> 00:05:07,208 it's just a matter of knowing that north is opposite south, 96 00:05:07,291 --> 00:05:09,916 that east is 90 degrees clockwise from north, 97 00:05:10,000 --> 00:05:12,041 and that west is opposite east. 98 00:05:12,125 --> 00:05:16,291 Every time I wanted to watch the sunrise, I'd look the wrong way. 99 00:05:16,791 --> 00:05:19,125 And watching the sunset was even worse! 100 00:05:21,166 --> 00:05:24,708 But now I know the sun rises in the east and sets in the west, 101 00:05:24,791 --> 00:05:28,250 I haven't missed a single one. Thanks, cardinal directions! 102 00:05:28,333 --> 00:05:31,791 Side effects of cardinal directions include arriving on time, 103 00:05:31,875 --> 00:05:34,625 a stronger grasp of geography, and understanding maps. 104 00:05:34,708 --> 00:05:37,625 Ask your cartographer if cardinal directions are right for you. 105 00:05:37,708 --> 00:05:41,333 For those in search of more clarity, try intercardinal directions. 106 00:05:41,416 --> 00:05:42,833 Use only as directed. 107 00:05:42,916 --> 00:05:44,916 We know the search can be long, 108 00:05:45,000 --> 00:05:47,750 but with cardinal directions, there is a way. 109 00:05:49,000 --> 00:05:51,791 Maybe we should ask someone for directions. 110 00:05:54,708 --> 00:05:57,625 Hey, StoryBots. Can you please tell me a fun fact? 111 00:05:58,916 --> 00:06:01,625 Fun fact number 101. 112 00:06:03,208 --> 00:06:06,125 Did you know that snails can take super long naps? 113 00:06:06,208 --> 00:06:08,708 Some have even slept for up to three years! 114 00:06:09,458 --> 00:06:13,875 Okay, sleepy head. It's been three years, time to wake up. 115 00:06:15,166 --> 00:06:16,625 What time is it? 116 00:06:16,708 --> 00:06:17,666 November. 117 00:06:19,125 --> 00:06:21,541 Just five more months, please. 118 00:06:21,625 --> 00:06:22,583 Okay, dear. 119 00:06:23,583 --> 00:06:25,125 Such a little angel. 120 00:06:33,916 --> 00:06:37,291 Next stop, Emmett's mum's house. 121 00:06:44,250 --> 00:06:47,000 Emmett? You, like, in here? 122 00:06:48,083 --> 00:06:51,583 Wow. This place is wild. 123 00:06:55,500 --> 00:06:57,750 And a "choo choo" to you too. 124 00:06:59,000 --> 00:07:00,500 -Hey, Bang! -Whoa! 125 00:07:01,916 --> 00:07:04,583 Hey, Emmett. How you doing, man? 126 00:07:04,666 --> 00:07:09,333 Great, Bang. I just glued on the last piece of my biggest model yet! 127 00:07:11,791 --> 00:07:14,208 Whoa. Awesome. 128 00:07:14,291 --> 00:07:16,250 But speaking of glue, 129 00:07:16,333 --> 00:07:20,083 I was hoping you could help me answer a question for my friend-- 130 00:07:20,583 --> 00:07:25,333 Emmett, honey, come upstairs for lunch. Bang, you're welcome too, dear. 131 00:07:25,416 --> 00:07:27,875 Thanks, Mrs. Emmett's Mum, 132 00:07:27,958 --> 00:07:30,875 but I totally ate a burrito before I got here. 133 00:07:30,958 --> 00:07:32,500 Be right there, Mum. 134 00:07:33,291 --> 00:07:37,791 Sorry, Bang, but Build Your Own Sandwich Day waits for no man. 135 00:07:38,291 --> 00:07:40,791 Feel free to look around while I'm gone. 136 00:07:40,875 --> 00:07:44,250 Build Your Own Sandwich Day Gotta build that sandwich 137 00:07:44,333 --> 00:07:48,000 Don't worry, Emmett. Your stuff is safe with me, man. 138 00:07:48,708 --> 00:07:50,833 Huh? No way! 139 00:07:50,916 --> 00:07:54,750 A perfect scale replica of the Space Blower-Upper 9000 140 00:07:54,833 --> 00:07:56,833 from SpaceBots in Outer Space? 141 00:07:56,916 --> 00:08:02,875 Man, this is, like, the most totally rare, one-of-a-kind model I've ever seen. 142 00:08:02,958 --> 00:08:05,416 Better be super careful around this one-- 143 00:08:06,041 --> 00:08:07,083 Huh? 144 00:08:19,375 --> 00:08:20,208 Huh? 145 00:08:30,958 --> 00:08:33,791 And one more slice of bread ought to do it. 146 00:08:33,875 --> 00:08:37,375 Hurry and eat, Emmett. You don't want to leave Bang waiting. 147 00:08:37,875 --> 00:08:42,000 Bang's the chillest guy I know. What could possibly go wrong? 148 00:08:55,916 --> 00:08:57,083 Hey, what's up? 149 00:09:09,041 --> 00:09:11,083 Phew. That wasn't so bad. 150 00:09:26,333 --> 00:09:27,916 Hey, Bang, are you-- 151 00:09:31,166 --> 00:09:34,000 Hi, StoryBots, my name is Finley. 152 00:09:34,666 --> 00:09:36,416 How deep is the ocean? 153 00:09:38,166 --> 00:09:40,500 -Hey, Dink? Yeah, Doink? 154 00:09:41,000 --> 00:09:43,333 How deep do you think the ocean is? 155 00:09:44,500 --> 00:09:46,125 Wait, 100 feet? 156 00:09:47,041 --> 00:09:50,083 100 feet? It's gotta be way more than that, like-- 157 00:09:50,166 --> 00:09:52,166 Like 103 feet! 158 00:09:52,250 --> 00:09:56,750 Wait. You think it's three whole feet more than 100? 159 00:09:56,833 --> 00:09:57,875 At least! 160 00:09:57,958 --> 00:10:01,375 Oh, yeah? Who told you that? A zebra? 161 00:10:01,458 --> 00:10:04,958 A zebra? That's funny. You're a real comedian, aren't you? 162 00:10:05,041 --> 00:10:06,916 Yeah, and I got a joke for you. 163 00:10:07,000 --> 00:10:10,541 I know a guy who thinks the ocean is 103 feet deep! 164 00:10:11,791 --> 00:10:14,958 That's it! I cannot be friends with someone who thinks 165 00:10:15,041 --> 00:10:17,250 the ocean is less than 103 feet deep. 166 00:10:17,333 --> 00:10:20,625 Oh, yeah? I won't be friends with you either then, okay? 167 00:10:20,708 --> 00:10:22,625 -Fine. Okay, fine. -Fine. 168 00:10:22,708 --> 00:10:24,958 -Fine! -Fine! 169 00:10:26,750 --> 00:10:29,916 Pardon me, but I couldn't help overhear your argument 170 00:10:30,000 --> 00:10:32,083 and thought I could settle matters. 171 00:10:32,625 --> 00:10:36,958 The deepest part of the ocean is 36,200 feet, 172 00:10:37,041 --> 00:10:39,250 or almost seven miles. 173 00:10:44,916 --> 00:10:47,916 Yeah, right, buddy, and I'm the King of England! 174 00:10:49,166 --> 00:10:51,166 36,000 feet? 175 00:10:52,708 --> 00:10:56,708 Can you believe that shark thinks he knows how deep the ocean is? 176 00:10:57,375 --> 00:10:59,750 What would a shark know about the ocean? 177 00:11:07,708 --> 00:11:10,916 We're diving down, down, down, down And then we'll dive some more 178 00:11:11,000 --> 00:11:13,500 In the big deep ocean That we love to explore 179 00:11:13,583 --> 00:11:16,666 We're dropping low, low, low, low Because we're going to go 180 00:11:16,750 --> 00:11:19,416 To the deepest known point On the ocean floor 181 00:11:19,500 --> 00:11:22,583 Under the waves, there are valleys And hills all around 182 00:11:22,666 --> 00:11:25,666 On the average It's about 12,000 feet down 183 00:11:25,750 --> 00:11:28,500 That's over 1,000 school buses All in a stack 184 00:11:28,583 --> 00:11:30,500 Or 800 T-Rexes 185 00:11:30,583 --> 00:11:31,750 What a fun fact! 186 00:11:31,833 --> 00:11:34,958 But there's a way, way, way, way Deeper place we know 187 00:11:35,041 --> 00:11:37,625 The Mariana Trench Is where we've got to go 188 00:11:37,708 --> 00:11:40,875 Where the lowest known point Is called Challenger Deep 189 00:11:40,958 --> 00:11:43,500 As low as 36,200 feet 190 00:11:43,583 --> 00:11:46,708 That's 20 tall skyscrapers Under the sea 191 00:11:46,791 --> 00:11:49,625 Or 118 Statues of Liberty 192 00:11:49,708 --> 00:11:52,500 If you could sink Mount Everest Down that deep 193 00:11:52,583 --> 00:11:55,458 There'd be a whole mile of water Up over its peak 194 00:11:55,541 --> 00:11:58,541 We're dropping down, down, down, down And then we'll drop some more 195 00:11:58,625 --> 00:12:01,625 Where hardly anyone has ever gone before 196 00:12:01,708 --> 00:12:04,750 We've got to dive, dive, dive Till finally we arrive 197 00:12:04,833 --> 00:12:07,708 At the lowest known point On the ocean floor 198 00:12:07,791 --> 00:12:11,583 Nearly seven miles down On the ocean floor 199 00:12:14,250 --> 00:12:17,541 Next stop, Emmett's mum's house. 200 00:12:20,375 --> 00:12:22,916 Emmett, dude, I am so sorry. 201 00:12:23,000 --> 00:12:27,416 I am totally gonna fix all these models, starting with this ship. 202 00:12:29,583 --> 00:12:34,125 Oh. Well, at least I saved the Space Blower-Upper 9000? 203 00:12:36,166 --> 00:12:38,541 They're-- They're all broken. 204 00:12:39,291 --> 00:12:41,333 This… is… 205 00:12:42,083 --> 00:12:43,708 amazing! 206 00:12:44,291 --> 00:12:45,875 Uh, come again? 207 00:12:46,750 --> 00:12:51,333 Think of how much fun it'll be putting all these models back together! 208 00:12:51,416 --> 00:12:53,583 Oh, man, that is such a relief. 209 00:12:53,666 --> 00:12:56,500 I thought you were going to totally freak out. 210 00:12:56,583 --> 00:12:58,750 So, while we're fixing stuff, 211 00:12:58,833 --> 00:13:02,041 could you tell me how glue works for Mr. Wonderful? 212 00:13:02,625 --> 00:13:04,833 Well, you've come to the right place. 213 00:13:04,916 --> 00:13:07,666 I know all sorts of ways glue works. 214 00:13:07,750 --> 00:13:11,750 In fact, I can show you two main ways that glue works. 215 00:13:12,458 --> 00:13:15,791 The first is called mechanical locking. 216 00:13:16,375 --> 00:13:19,041 Mechanical locking, huh? How does that work? 217 00:13:19,625 --> 00:13:20,625 Just listen. 218 00:13:21,541 --> 00:13:24,750 When you use a gob of glue Just what exactly does it do 219 00:13:24,833 --> 00:13:28,083 To get things sticking? 220 00:13:28,166 --> 00:13:31,291 It can fix a flower pot Or any broken toy you've got 221 00:13:31,375 --> 00:13:33,416 But how? 222 00:13:34,875 --> 00:13:38,000 If you magnify the smoothest stuff 223 00:13:38,083 --> 00:13:41,000 It's coarse and rough, you'll see 224 00:13:41,541 --> 00:13:44,541 Cracks and dents are many Yes, there are plenty 225 00:13:44,625 --> 00:13:48,083 Here and there, everywhere Roughness is the key 226 00:13:48,166 --> 00:13:51,333 Glue goes into tiny cracks It oozes into all the gaps 227 00:13:51,416 --> 00:13:54,666 And there it hardens 228 00:13:54,750 --> 00:13:58,125 Everywhere that it can drip It gets a firm and hearty grip 229 00:13:58,208 --> 00:14:01,416 And so 230 00:14:01,500 --> 00:14:08,000 When it dries completely Then its grip is good and strong 231 00:14:08,083 --> 00:14:10,333 There you go, good as new Through and through 232 00:14:10,416 --> 00:14:13,083 'Cause the glue won't let go 233 00:14:13,666 --> 00:14:15,291 That's mechanical locking. 234 00:14:15,375 --> 00:14:18,083 But glue also works on a molecular level. 235 00:14:18,166 --> 00:14:21,416 Atoms make up everything That's the rule 236 00:14:21,500 --> 00:14:23,958 Though they're tiny, not very large 237 00:14:24,041 --> 00:14:27,708 And they combine into clusters Called molecules 238 00:14:27,791 --> 00:14:31,458 Which often can have an electric charge 239 00:14:31,541 --> 00:14:34,791 Those have a couple of different ends 240 00:14:34,875 --> 00:14:37,708 Positive and negative too 241 00:14:37,791 --> 00:14:41,416 And when opposing ends line up They stick to each other 242 00:14:41,500 --> 00:14:44,583 Like pairs of magnets do It's true! 243 00:14:45,083 --> 00:14:48,000 There's a name for that. Van der Waals forces. 244 00:14:48,083 --> 00:14:51,250 Now the molecules of glue Are clinging by the millions 245 00:14:51,333 --> 00:14:54,625 To the things you're joining 246 00:14:54,708 --> 00:15:00,291 -So it helps them stick together -That's the coolest thing I've ever seen 247 00:15:01,458 --> 00:15:04,375 Glue can work in many ways 248 00:15:04,458 --> 00:15:08,291 I've shown you only two 249 00:15:08,375 --> 00:15:09,208 Glue! 250 00:15:09,291 --> 00:15:12,791 But when you build a model truck Or fix a handle on a cup 251 00:15:12,875 --> 00:15:16,416 Just think of all the great things 252 00:15:16,500 --> 00:15:21,750 Glue can do 253 00:15:25,000 --> 00:15:26,708 Whoa! 254 00:15:26,791 --> 00:15:29,250 Man, Emmett, you sure know your glue. 255 00:15:29,333 --> 00:15:32,625 Well, better give Mr. Wonderful his answer. Thanks, man! 256 00:15:32,708 --> 00:15:34,583 No problem, Bang. Any time. 257 00:15:35,083 --> 00:15:37,083 Take care, brother. See ya. Bye! 258 00:15:37,166 --> 00:15:39,500 See you later! Take care! Goodbye! 259 00:15:43,958 --> 00:15:48,083 Oh, dear, it's broken. Guess I gotta fix it again. 260 00:15:52,958 --> 00:15:55,625 Welcome, class. There are two primary theories 261 00:15:55,708 --> 00:15:58,333 that explain how glue sticks things together, 262 00:15:58,416 --> 00:16:01,500 which my assistant, Gopher, will help me demonstrate. 263 00:16:02,333 --> 00:16:05,000 The first theory is called mechanical locking. 264 00:16:05,083 --> 00:16:07,708 Even the smoothest-looking surfaces are rough 265 00:16:07,791 --> 00:16:10,041 when you put them under a microscope. 266 00:16:10,125 --> 00:16:15,166 Mechanical locking happens when wet glue pours into all of the small crevices 267 00:16:15,250 --> 00:16:16,250 and dries. 268 00:16:17,125 --> 00:16:21,458 It grips the microscopic rough surfaces and holds them together. 269 00:16:24,083 --> 00:16:26,958 The second theory is called van der Waals forces. 270 00:16:27,041 --> 00:16:31,250 It claims that things stick together at the molecular level. 271 00:16:33,125 --> 00:16:35,458 Molecules are groups of atoms. 272 00:16:37,583 --> 00:16:42,000 Some of them have positive charges, and some of them have negative charges. 273 00:16:42,833 --> 00:16:45,041 When molecules with positive charges 274 00:16:45,125 --> 00:16:49,125 and molecules with negative charges line up, they stick together. 275 00:16:51,375 --> 00:16:54,875 Similar to the way opposite ends of a magnet stick together. 276 00:16:56,625 --> 00:16:59,625 While van der Waals forces and mechanical locking 277 00:16:59,708 --> 00:17:03,333 are the primary ways that glue makes things stick together, 278 00:17:03,416 --> 00:17:06,833 people are still learning about how glue works, 279 00:17:07,333 --> 00:17:10,541 and inventing new ways to make better glues. 280 00:17:10,625 --> 00:17:12,333 Isn't that right, Gopher? 281 00:17:13,125 --> 00:17:14,125 A monster! 282 00:17:14,750 --> 00:17:16,041 Class dismissed! 283 00:17:16,583 --> 00:17:18,291 Run for your life! 284 00:17:25,083 --> 00:17:29,166 Hello? Mr. Wonderful? Are you there? 285 00:17:29,250 --> 00:17:31,583 Bang, I'm so glad you're back. 286 00:17:31,666 --> 00:17:35,166 Did you figure out how glue works so I can get the knocker on the door? 287 00:17:35,250 --> 00:17:37,208 My friends are getting a little antsy. 288 00:17:37,291 --> 00:17:40,833 It's only one minute till showtime! We're doomed! 289 00:17:40,916 --> 00:17:42,583 I sure did, Mr. Wonderful. 290 00:17:42,666 --> 00:17:46,666 But first, can you tell me what the surface of your door feels like? 291 00:17:46,750 --> 00:17:49,375 Why, Bang, it's incredibly smooth. 292 00:17:49,458 --> 00:17:50,708 Like my bald head. 293 00:17:51,208 --> 00:17:55,333 Therein lies the problem, dude. It's too smooth. 294 00:17:55,416 --> 00:17:58,000 Do you happen to have any sandpaper nearby? 295 00:17:58,083 --> 00:18:00,750 You know what? I do have some sandpaper. 296 00:18:01,250 --> 00:18:02,458 Right here. 297 00:18:02,541 --> 00:18:06,416 Sweet! Now all you've got to do is sand down the part of the door 298 00:18:06,500 --> 00:18:08,125 that the knocker sticks to. 299 00:18:12,583 --> 00:18:16,375 Bang, why are we using sandpaper to make the smooth door rough? 300 00:18:16,458 --> 00:18:20,333 It creates grooves and crevices that the glue can sink into. 301 00:18:20,416 --> 00:18:24,791 Then when it dries, it'll, like, totally hold the knocker in place. 302 00:18:24,875 --> 00:18:27,708 That's called mechanical locking. 303 00:18:27,791 --> 00:18:30,375 Wow. Sounds very complicated. 304 00:18:30,916 --> 00:18:35,083 That's nothing, man. You should hear about van der Waals forces. 305 00:18:36,500 --> 00:18:37,458 Done! 306 00:18:37,541 --> 00:18:42,166 All right. Now try re-gluing that knocker back on. 307 00:18:46,250 --> 00:18:50,875 Look at that. With the rougher surface, the glue stuck the knocker to the door. 308 00:18:50,958 --> 00:18:53,500 Mechanical locking for the win. 309 00:18:54,041 --> 00:18:58,791 Bang, thank you so much for all your help. I wish I could stay and chat, but-- 310 00:18:58,875 --> 00:19:01,083 There's only ten seconds to showtime! 311 00:19:01,833 --> 00:19:04,416 But it looks like my show's about to start. 312 00:19:04,500 --> 00:19:07,000 It's our pleasure, Mr. Wonderful, dude. 313 00:19:07,083 --> 00:19:09,500 -Glad we could help! -Good luck! 314 00:19:09,583 --> 00:19:11,833 Thank you all, StoryBots. 315 00:19:11,916 --> 00:19:15,208 I love you, and I'll see you in the Land of Imagination.