Alpha science classroom： DIY Paper Squawker

Do children know that not all animals use their ears to hear sounds? For example, snakes perceive sound waves through their jaws! Many insects perceive sound waves through their antennae. Although these methods of detecting sound may be different, they all respond to the same thing that our ears do: sound waves in the environment. Today, the alpha science classroom teaches kids about the DIY Paper Squawker. In this kid's physical science experiments activity, kids can use very simple materials to create some impressive sound waves and see how these sound waves are created with this fun kids science experiments activity. Now, kids get ready to make some noise!

Alpha Science Classroom: DIY paper airplane, required materials

• A sheet of paper

• A pair of scissors

• a ruler

Alpha Science Classroom: DIY Paper Squawker, How-to

Step 1: First, children use scissors to cut a 3-inch by 8.5-inch rectangle from the paper. Fold the rectangle in half lengthwise so that the short ends meet. Make a strong crease.

Step 2: After children have folded the paper into a rectangle, fold each end toward the middle crease in the opposite direction of the original crease. Your paper should have three creases so that it makes a "W" shape when viewed from the side.

Step 3: Children turn your paper around so that your first crease is facing you. Take your folded paper and use scissors to cut a small triangle in the center of the crease (a quarter-inch to a half-inch at the bottom). If you open the paper, it should look like a small diamond.

Step 4: Children keep the paper folded and turn it around so that the cut is on the side facing you. Hold the paper horizontally so that it looks a little like a paper spout.

Step 5: Children gently press the two lips of the paper spout against their own lips. Use your pointer or middle finger to press the top crease and your thumb to press the bottom crease to hold it in place. Keep your lips open and blow hard (don't close your lips tightly, stay relaxed).

Step 6: Kids, if you don't hear the sound right away, try opening your mouth slightly wider and opening your paper mouth slightly wider as well.

Step 7: Kids try a slightly different configuration until you get a strong grunt - you'll know when you hear it, practice your grunt while making observations. What do you notice about the paper when you bark? Is it moving? How would you describe this movement?

Step 8: The children find the smallest gap between the paper-mouth while still making a sound. Listen to this sound. What does it sound like?

Step 9: Find the largest gap between your paper-mouths while still getting the sound. Listen to this sound. What is the difference in sound when the gap is smaller and wider? Is one sound lower or higher than the other?

Extra. Test different sizes of triangular cutouts. How does the size of the cutout affect the sound and performance of your bird?

Alpha Science Classroom: DIY Paper Squawker, Science Principles

This physical science experiment activity for kids at Alpha Science Classroom makes a lot of noise as they explore the physical properties of sound! You should observe that as your paper makes a gurgling sound, it vibrates gently in your hand. You should observe that when your paper makes a gurgling sound, it also vibrates gently in your hand. You should observe that when your paper makes a gurgling sound, it also vibrates gently in your hand. This tells you something about the sound that your purr machine produces. When you blow into it, you cause the paper to vibrate. These vibrations create sound waves that we perceive as a distinctive purr when they reach our ears.

As you make the slit in the flapper smaller, you should notice that the sound becomes higher. Because you're forcing the same amount of air through a smaller space, you're causing the paper to vibrate faster. Our ears perceive these faster vibrations as higher-pitched sounds. This is similar to how thinner strings on a guitar produce a higher-pitched sound - because they can vibrate faster and thus produce higher frequency sound waves.

As you make the gap in the paper birdie larger, you should notice that the sound becomes lower. In this case, you are blowing out as much air as you add space, and as a result, the paper vibrates slower. These slower vibrations produce lower frequency sound waves, which our ears perceive as lower-pitched sounds.

I believe that the children have heard the different sound waves emitted from the paper through their own efforts. Alpha Science Classroom's current children's physical science experiment activity is simple to do, but it contains sound waves and deep scientific mysteries so that children can learn and enjoy the fun of kid's science experiments at the same time, which is the most important point. Help kids learn happily and become the greatest scientists!

Alpha science toys are specially prepared for children with interesting children's physical science experiment kits, with a variety of interesting physical science phenomena, to prove the power and magic of science for children, so that learning is no longer a torment!