In winter, you can enjoy the electrostatic study with your children.
Firstly, two balloons were inflated without helium gas.
Secondly, the balloons rubbed on the carpet to generate static electricity.
Thirdly, the balloons were attached on the ceiling.
Look! Our exam was succeeded easily, and we had fun.
After the exam, a humidifier was turned on.
A short time later, two balloons came down.
Hope you and your kids enjoy the exam.
