G is for Ground

automatic captions, checked for structure and key terms; corrections welcome

[00:00:06.620] [unclear opening audio]
[00:00:37.980] Oh, hey Adabot, how are you doing?
[00:00:40.380] Oh, good. I was just wondering.
[00:00:42.860] Wondering about what?
[00:00:44.420] Why do some power cables have two conductors and some have three?
[00:00:49.900] That's a very good question, Adabot.
[00:00:51.520] The answer is these three prong cables are grounded.
[00:00:55.180] You mean, they're not allowed to go out and play?
[00:00:58.000] Oh, no, not like that.
[00:00:59.580] See, on this connector, we have a third prong, and that's the ground.
[00:01:05.220] We use these with appliances like this one for safety.
[00:01:08.600] If something goes wrong electrically inside, that extra dangerous electrical
[00:01:13.000] charge goes through the ground and not through you, which would cause a nasty
[00:01:17.220] shock.
[00:01:18.820] Ground? Like outside with all the dirt?
[00:01:22.640] That's right. The earth is ground.
[00:01:25.540] So anything connected to the earth is grounded.
[00:01:28.800] Huh? So let's say we're talking about things that are ground.
[00:01:32.980] How many can we find just by looking around?
[00:01:35.620] Are you kidding? That's easy. We're nearly surrounded.
[00:01:38.900] There's a lot of things here that are very well grounded.
[00:01:45.280] Like dirt.
[00:01:47.620] [unclear reply]
[00:01:50.820] Pipes.
[00:01:51.460] Yes, very true.
[00:01:53.860] A sink?
[00:01:55.480] Also connected to the earth.
[00:01:57.800] A tree?
[00:01:59.180] Well, yes, but it's not conductive.
[00:02:01.580] This rock?
[00:02:02.720] Uh-huh.
[00:02:03.440] That rock?
[00:02:04.300] You bet.
[00:02:05.200] A fire extinguisher?
[00:02:06.840] No way.
[00:02:08.580] A cup of tea?
[00:02:10.200] Not ground.
[00:02:12.560] An airplane?
[00:02:14.120] Same deal.
[00:02:15.100] A rubber ball?
[00:02:16.580] Not grounded.
[00:02:18.560] A lightning rod?
[00:02:20.100] Oh, most definitely.
[00:02:22.140] It doesn't take long to complete this search.
[00:02:24.840] Ground is anything conductive that's connected to the Earth.
[00:02:30.700] Hey, Adabot. Back already? That was quick.
[00:02:33.260] Yes, I found examples all over.
[00:02:36.500] You might say you covered a lot of ground.
[00:02:39.960] Oh, zing. Good one. Good one. That was good.
[00:03:02.380] I'll see you next time.