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Now we are going to talk about static electricity. Here we have a balloon and water, and falling water. And look, nothing happened when I put near the balloon.

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Now I wrap with my hair. Now I put near and look. The water moves to the balloon. This is why when I wrap the balloon with my hair, the balloon is negatively charged and the hair is positively charged.

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I'm going to talk about electrical charge.

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Now the balloon is electrically neutral, this means it has got the same number of positive

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charge and negative charge.

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But when I wrap it with my clothes or with my t-shirt in this case or with my hair, it

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If we count our negative charge, this has got more negative charge than positive charge or positive charge than has got more positive charge than negative charge.

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We'll check how is electrically neutral, this means it has got the same number of positive charge and negative charge.

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So, if this balloon is positively charged, the positive charge attracts the negative

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charge of the water.

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And if it is negatively charged, it attracts the positive charge of the water.

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you can see that a water there's a little bit not alone because they attract the charge

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that's why they are different types if they were of both a negative charge the charge of the water

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and of the balloon, they would repulse and as they have got different charge, they attract.

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For this experiment we need two balloons.

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You can see that they don't repel and they don't attract.

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But if we wrap one with the herb, each attracts the other.

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And if we rub the other, they repel.

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And that's it.

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Hi, I'm going to show you some experiments about light.

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However, light has got different properties.

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For example, reflection and refraction.

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And this experiment is about refraction.

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I have a glass of water and a stick. If we put the stick inside the glass of water, the stick seems to be bent or broken.

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As you know, Earth has less density than water, so direct travels faster through the Earth than through the water.

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So if we mix both mediums, the speed of light changes and the direction too.

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The next experiment is about reflection. Here I have got a signal. Here I have got a signal.

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If I put this signal behind the glass of water, the water acts like a lens and we see the

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are going the other way around. Here I have got some hydrogen pearls, two cups of water

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and a test cup. Here I have got the cup. I am going to put you inside the cup of water.

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here you can see the cup, correct? But now, if I put these pearls inside the other cup,

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they look like they disappear. Let's see if they are inside the glass. Yes, they are.

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This happens because the pearls have absorbed the water, so now they have the same density

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than water for this reason the light which is traveling through the water through the water

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suffer not reflection and no refraction and making possible that to see the pearls inside the cup

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and that's all bye hello i am elsa and i am going to talk about attraction to do this project you

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need a can and a balloon. But first I am going to show you that if the balloon has not got

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any electrical charges, the can doesn't move. But if I wrap the balloon in my hair, the

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can is going to move like this like this so and this is why the the balloon have

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got different different charges have different charge for example one of

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these objects have got electrical have got negative electrical charges and the

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other have got positive electrical charges. This is it. Hello, I'm Elsa and I am going to talk about

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repulsion. First, to do this project you need two balloons. Later you are going to see that if we

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If we wrap one of the balloons in your hair for a long time, that if we put it near, they are going to repair. But, if we wrap the other balloon in the hair, you are going to see that they are going to attract.

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This is why we see in the first project, we see that one of the balloons is charged and the other not.

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And now we see that the two balloons are charged. This is all.

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I am going to talk about the electrical charge of water.

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First of all, first of this experiment, I need, I am going to take two balloons.

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I am going to put next to the other, but nothing happens.

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When I rub with my hair, the balloons are repairing each other.

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This is because the hair have positive charge and the balloon have negative.

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And this has never been. And when we brush the balloon to the hair, they pass to positive time.

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And this is because when the balloon supports the other balloon.

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For the other experiment, we need one balloon and one can of Fanta.

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For example, I put this, but nothing happened.

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But when I brush the balloon with my hair, the kind of phantom, they, the phantom, the balloon attracts to the phantom.

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This is because the balloon, when I grasp with my head the balloon, they...

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Hello, my name is Carla. I'm going to do a project about electricity.

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And if you want to do this project, you need two balloons.

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Okay, if you want to do that, the balloons are together,

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you need this balloon, one balloon and a rope in your head.

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Are you sure?

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If you now see, the balloons are together.

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If you want the balloons to be separated, you need to rub the two balloons in your head.

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Now the two balloons are not put together because the two have negative charges.

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And this is the project about the electrical chargers.

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Bye!

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And I'm going to do two experiments.

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For the first experiment, I need two balloons.

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First, I wrap both balloons with my hair.

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As you can see, when I join them, they repel each other.

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This happens because they are the same charge.

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When I started, they were neutral. But when I wrapped both balloons with my hair, they became the same type.

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This is why they repel each other.

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This is the second experiment. For the second experiment, I need a balloon and water.

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First, I wrap this balloon with my hair.

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Now, I join the balloon with the water.

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As you can see, the balloon attracts the water.

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This happens because they are different charts.

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When I started, the balloon was neutral and the water neutral.

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But when I wrapped the balloon with my hair, it became a positive or negative chart.

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And when I join the water with the balloon, the balloon attracts the water.

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Hello, I am the experiment with two balloons.

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If I put the two balloons together, anything happens.

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But if I rub the balloons in my head, you can see here the electricity.

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If I put the balloons together, the balloons rebel.

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This happens because the balloons have the same charges and repels.

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For the second experiment you need a balloon and the water slowly.

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If I rub the balloon in the head and I put together the water, you can see that the water moves.

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This happens because the balloon has electricity and the water is a conductor of water and a track and this is all by