There is glass all around us - from windows to television screens to light bulbs. That got me curious about glass. I discovered that fire plus sand equals glass. Check out these cool videos of how glass is made.
I also looked up how sand is made into semiconductor chips. Semiconductor chips are small circuits made up of transistors that are in all our electronics such as smartphones, computers, and cars. Here are some videos about how sand is made into semiconductor chips and how the tiny circuits are made.