Alpha science classroom：Balloon Magic with Bernoulli’s Principle

The wind is everywhere, children like to try all kinds of flying toys in the wind, but do the children know? The wind is also harmful to humans, big wind can overturn our roofs, so why is there wind? Why is there wind? Alpha science classroom with children made Balloon Magic with Bernoulli's Principle, through this simple kids science experiments activity, let children understand what air pressure is. Let children learn about physical science experiments and the mystery of wind in the most famous Bernoulli’s Principle in material science experiments.

Alpha Science Classroom: The materials needed for Balloon Magic with Bernoulli’s Principle

• Two balloons of the same size

• String (about 60 cm in length)

• scissors

• tape

• Door frame

• Paper towel tube

Alpha Science Classroom: The steps of Balloon Magic with Bernoulli’s Principle

Step 1: The children inflate the two balloons and tie the balloons tightly at their ends. The size of the two balloons should be approximately the same.

Step 2: The children cut into two threads, each of which is about 30 cm long. Tie the end of a rope to one of the balloons. Tie the end of the other string to the second balloon.

Step 3: The children use tape to attach the loose end of each string to the underside of the top of the door frame. Separate the balloons, leaving a gap of about 15 cm between them. Make sure to keep the balloon away from obvious air currents (such as vents or fans).

Step 4: The children step on the front of the balloon and hold the tissue tube to blow air into the space between the two balloons. If you blow between balloons, what do you expect to happen to the balloons?

Step 5: Make sure the balloon is still. Then blow into the tissue tube very slowly. Try to generate a steady airflow. What did you notice? Is the balloon moving?

If the balloon moves, stop it and then use a tissue tube to blow it between them again. This time I tried to blow the pipe harder than before, but still maintained a steady airflow. What happened to the balloon this time? Can you explain your opinion?

Alpha Science Classroom: Balloon Magic with Bernoulli’s Principle Observation results

The alpha science classroom doesn't know if the children noticed that the two balloons were magically moving to each other without being touched at all? Then, the effect observed by the children is good proof of Bernoulli's principle. As long as the two balloons have just hung from the door frame, the air around them is static in all directions. This means that the air will apply the same amount of pressure to each side of the balloon, and both balloons will standstill. When children slowly blow the air between the balloons, they may not move much. This is because the very slow airflow does not greatly change the pressure conditions around the balloon.

Alpha science classroom today's Berkeley balloon magic kids science experiments is over, children can use their imagination to expand more classes on airflow from this material science experiment and explore more mysteries about physical science and air pressure. Of course, if children want to learn more about interesting activities in physical science experiments, they can go to alpha science toys kids

 what is the magic mystery of the wind? Through Berkeley's balloon magic kids science experiment, Alpha Science explained the mystery of kids' physical science knowledge.

kit to choose their favorite activities. We can explore more interesting scientific knowledge through scientific experiments. Become the most powerful little scientist.