Views: 4 Author: Site Editor Publish Time: 2021-12-09 Origin: Site
Our children like to play with balloons. From throwing to blasting, so when we put this flying balloon in front of them, they were fascinated. Today, Alpha Science Classroom teaches children to DIY flying balloons. Through this rotating flying balloon children's physical science experiments project, children can learn about aerodynamics and fall in love with this fun and simple kid's science experiments.
Alpha science classroom： DIY Flying Balloon，Materials you'll need
paper (heavier is better) (2)
permanent marker (1)
glue stick (optional)
Alpha science classroom: DIY Flying Balloon, step-by-step tutorial
Step 1: First, the children blow a big round balloon and tie the end. Then the children roll a piece of copy paper into an 11-inch tube to reduce the weight of your balloon. Roll the tube tightly so that the wall is two layers thick and the diameter is approximately 1.25 inches. Use tape to prevent the tube from unfolding.
Step 2: The children carefully use scissors to make a few 0.5 inch deep slits on one end of the tube. Fold these labels, place the end of the tube on the balloon knot, and then secure the tube to the bottom of the balloon with tape.
Step 3: Kids can make the balloon rotate by adding fins, but first you need to determine where to place the fins. Use permanent markers to draw an equator around the balloon. You can stick a piece of rope or paper around the equator and draw it with a marker to help form a straight line. After finishing the drawing, remove the rope or paper. You also need to use a permanent marker to draw two meridians on the balloon. These lines are perpendicular to each other and perpendicular to the equator you drew earlier. You can use the same rope or paper technique to get a straight line.
Step 4: The children need to make some fins, please cut out eight rectangular pieces of paper. Fold the strip in half, and then fold the small labels on each end like the picture.
Step 5：You can use tape or glue sticks to stick them to the balloon. Place them at a 45-degree angle on the balloon at the four points where the meridian you draw intersects with the equator (see green fins.) Make sure that all the fins are inclined in the same direction.
Step 6: The children turn on the hairdryer and point it at the ceiling. Gently place the balloon into the airflow and adjust it until it hovers in the airflow when you release it. The fins will cause the balloon to spin while floating. Try tilting the hairdryer slightly to the sides to see if you can make the balloon hover in the airflow. Can you walk with a hairdryer and let the balloon get stuck in the airflow?
Step 7: If you want the balloon to spin faster, paste the remaining four fins along the equator between the fins you have placed. As before, make sure that all the heat sinks are at the same angle and inclined in the same direction.
Alpha Science Class: DIY flying balloons, scientific principles
The alpha science classroom tells the children that in this children's physical science experiments, the balloon performs three tricks: it hovered, spins, and stays in the airflow of the hairdryer (unless you move too suddenly or too much). Hovering is due to the propulsion that the balloon gets from the moving air. The rotation is due to the fins capturing the moving air and causing the balloon to spin like a fan. But what is really interesting is the viscosity of the airflow.
The airflow from the hairdryer does stick to the balloon, so the air bends around the balloon, like a river flowing around a rock. This curved airflow tends to push the balloon into the center of the airflow, keeping the balloon good and stable. This allows the hairdryer to be moved without dropping the balloon. Do the children understand?
The children's flying balloons are flying in the air. This is the power of aerodynamics and the beginning of exploring the universe. I hope that this special children's physical science experiments activity in the alpha science classroom can give children the inspiration of science dreams, and at the same time make them fall in love with exploring the road of science, learn more about interesting kids science experiments activities, and become the greatest Astronaut.
Similarly, alpha science toys have also prepared many children's physics science experiment kits for children to explore more physical phenomena with children, understand and learn different principles of kid's science experiments, and grow up happily as great scientists.