What is Energy? | Types of Energy: Light, Heat, Water, Electrical and Wind | Kids Academy - By Lumos Learning
Transcript
| 00:00 | Welcome to Kids Academy . Uh huh . Hi , | |
| 00:37 | everyone . It looks like our friends Kite needs more | |
| 00:40 | wind energy to keep it flying . What is energy | |
| 00:44 | ? Energy is the ability to do work or to | |
| 00:48 | make something happen . So let's talk about some types | |
| 00:51 | of energy , light energy , heat , energy , | |
| 00:54 | electrical energy , water , energy and wind energy . | |
| 01:03 | That's a lot of different types of energy . There's | |
| 01:05 | one particular type of energy I want to talk about | |
| 01:07 | today , and that's an invisible energy . It's an | |
| 01:10 | energy you can't see , but it's all around us | |
| 01:14 | all the time . You might even feel it . | |
| 01:15 | Right now it's called wind Energy . Wind energy can | |
| 01:19 | do all kinds of things like blow this flag or | |
| 01:24 | help these kids keep their kite in the air . | |
| 01:28 | Yeah , it can also help push this toy boat | |
| 01:31 | across the pond and something you might have used . | |
| 01:34 | It harnesses wind energy is one of these . This | |
| 01:38 | is a pinwheel . If we wanted to move , | |
| 01:40 | we have to use energy . I can use an | |
| 01:42 | invisible type of energy , and we all know what | |
| 01:45 | I'm gonna do here . Yeah , blow into it | |
| 01:51 | . That's wind energy . And even though you can't | |
| 01:54 | see it , it's coming out of my mouth and | |
| 01:56 | hitting the blades of our pinwheel and spinning it Bali | |
| 01:59 | . Why don't you give it a shot ? Yeah | |
| 02:03 | . Wow . Great job . That's all energy . | |
| 02:10 | This type is wind energy . Let's do some experiments | |
| 02:14 | with some wind energy now explained earlier how you can't | |
| 02:17 | see wind energy , you can only see what it | |
| 02:19 | does . So what we've set up here is a | |
| 02:21 | little experiment that you can try at home . It's | |
| 02:24 | basically a wind tunnel . So I have a wind | |
| 02:27 | machine right here . A simple house fan , and | |
| 02:30 | then I have a couple of different objects of different | |
| 02:32 | weights and densities . So we have a hammer . | |
| 02:36 | Pretty heavy . A dollar bill . Who doesn't like | |
| 02:39 | a dog go a regular pen , an empty water | |
| 02:43 | bottle and an Easter egg for the holidays . So | |
| 02:46 | I'm going to place all of these about the same | |
| 02:48 | distance from my wind machine . What I'm gonna do | |
| 02:51 | is I'm gonna plug my wind machine into the wall | |
| 02:57 | . Now the wind machine is gonna pull electrical energy | |
| 03:00 | from the wall down this cable into the machine and | |
| 03:04 | turn the electrical energy by spinning into wind energy . | |
| 03:09 | Now that wind energy , by definition , should be | |
| 03:12 | able to do work or move things . We should | |
| 03:14 | be able to move some of these objects farther away | |
| 03:17 | from the fan . So let's see if it works | |
| 03:19 | . Now we're stationed just behind the wind machine and | |
| 03:22 | I'm gonna fire it up and see if we can | |
| 03:24 | turn some of that electrical energy into wind energy and | |
| 03:27 | have it do some work for us . Mhm . | |
| 03:30 | Which object do you think will move first ? The | |
| 03:34 | egg , the empty water bottle , the pen , | |
| 03:38 | the dollar or the hammer . Let's fire it up | |
| 03:44 | . Yeah . Mhm . There goes our dollar . | |
| 03:52 | Now . Our water bottle is definitely moving . We | |
| 03:54 | can see the energy being transferred into that bottle . | |
| 03:57 | Depends moving a little bit . And the egg seems | |
| 04:00 | to be wobbling . I'm gonna turn up the energy | |
| 04:02 | a little bit , See if we can't move some | |
| 04:04 | of this stuff . There goes the eggs starting to | |
| 04:14 | move away . Bottle Looks like it's about to go | |
| 04:18 | . Now we've got one more level . Let's see | |
| 04:19 | if we can really get it going . There goes | |
| 04:26 | the bottle . Dollar bill . Looks like it might | |
| 04:29 | be stuck under the hammer . There . Hope there | |
| 04:34 | goes the dollar . What we saw in this experiment | |
| 04:38 | was that the force from our fan or the amount | |
| 04:41 | of energy was able to move Some of the lighter | |
| 04:43 | objects , like the water bottle and the egg and | |
| 04:45 | the dollar bill really flew away . But other heavier | |
| 04:48 | objects like our hammer barely moved at all . Let's | |
| 04:52 | see if we can put some of that wind energy | |
| 04:54 | to work for us . Okay , So what we've | |
| 04:57 | designed here is a wind catcher , a wind turbine | |
| 05:05 | connected to our rod , which is just loosely held | |
| 05:08 | on by some string . And then down here , | |
| 05:12 | we've tied some string onto it . And I use | |
| 05:14 | these to eggs to try and keep the string in | |
| 05:15 | place . And you'll see why I need those in | |
| 05:17 | a minute and attached to that string . Yeah , | |
| 05:21 | is another egg . Let's see if we can take | |
| 05:23 | that wind energy and make it do some work for | |
| 05:26 | us and pick up that egg . Here we go | |
| 05:31 | . Look at our spoons are rotating , spinning our | |
| 05:34 | shaft and it lifted the egg off the floor for | |
| 05:39 | us . Now you might be wondering , How can | |
| 05:41 | wind energy like this Help me around the house engineers | |
| 05:45 | work together with scientists to build large wind turbines like | |
| 05:49 | this one . It looks very similar to the pinwheel | |
| 05:52 | that we used earlier today . Both catch that invisible | |
| 05:55 | energy called wind . As the wind blows , it | |
| 05:59 | creates force that force or wind energy is able to | |
| 06:03 | turn the blades of our turbine . And as the | |
| 06:06 | turbine spins , the generator inside creates electricity . That | |
| 06:11 | electricity travels down wires across the power lines and into | |
| 06:16 | your home to light up your house . When you | |
| 06:19 | go to charge something , you might actually be plugging | |
| 06:22 | into electricity generated by the wind . Whoa , that's | |
| 06:25 | a lot of science . Let's go burn off some | |
| 06:27 | of our own energy . We way too . Subscribe | |
| 06:46 | to our channel to stay updated on new videos , | |
| 06:50 | find links to our apps in the comments below Oh | |
| 00:0-1 | ! |
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