How does sound, light work with electrical components:

5:40 min you can see the light-dependent resistor ( Photoresistor ) and how it is used in electronic components

What makes bridges strong?

An informative video on an easy level

It's hard to believe, but everything in the world is in motion, all the time. Even things that look perfectly still are packed with atoms that are vibrating with energy. Understanding how motion works was one of the great milestones of science and it's credited to the brilliant English physicist Sir Isaac Newton. Here is  great introduction:

https://www.explainthatstuff.com/motion.html