Light and Shadows for Kids | Science Video for Kids | Kids Academy

Welcome to Kids Academy Ready Bollie? Try and guess these shadows It's a dinosaur. Haha, good one. How about this one? It's a dog! Nice Hey Andrew What makes a shadow? It's a good question Bollie. Let's check it out As we learned in earlier lessons, light comes from a light source like the Sun If that light gets blocked by another object like a tree it creates a shadow Blocking sources of light can create different types of shadows Now let's step into the light lab and do some experiments with different objects to see what kind of shadows we can make The first object we're going to use is a plastic clipboard You can see I can see my hand right through the clipboard Most light is passing through it. If I hold it in front of my light source like this It doesn't make much of a shadow. Objects like this that let almost all light through are called transparent Our next object is this plastic lid. Now this plastic lid may look transparent like the clipboard before it But you'll notice if I put my hand behind it how much more difficult it is for you to see my hand through it Objects like this are called translucent. Translucent means that some of the light can pass through but not all of it Translucent objects leave a shadow like this You can see that the inside of the shadow is kind of light. Some of the light is passing through But some of it is being blocked. If I hold the plastic lid up to the light it will dim the entire surface If I hold it closer down like this You can see the sharp outline of a translucent object while still letting some of the light come through in the middle The last object we're going to use are unit cubes Now you can already tell from the shadow in the background here That this object doesn't let any light pass through. The closer I get to the surface the darker my shadow gets But if I put it in front of my light source It will completely block out all the light An object that doesn't let any light through like this is called opaque These objects make very solid shadows like the one you see here Take a look at our three objects again. We have our opaque unit cubes, our transparent clipboard, and our translucent plastic top Take a look at the shadows they make. Our transparent clipboard lets the most light through and barely makes any shadow. Our translucent plastic lid Makes a little bit of a shadow But you can still see the light through it. And our opaque unit cubes make a really dark shadow blocking all the light out As sunlight comes down to earth sometimes it gets blocked by clouds. The clouds will make shadows like this Try and guess the objects that made these different shadows. This shadow here was found in a restaurant It's created by these wooden letters This shadow is created on a curb near the road It's a fire hydrant shadow What about this shadow here? It was made by a little girl Today, we learned that if light traveling from a light source gets blocked it creates a shadow Different objects can create different types of shadows Transparent means all light passes through. These objects are almost invisible Translucent means some light can pass through and Opaque means no light can pass through Opaque objects make really good shadows That's a lot of cool stuff about shadows. Let's get back to our shadow puppets See you pals. See you next time Subscribe to our channel to stay updated on new videos find links to our apps in the comments below