The jazz music

The jazz music can let me to think of the what the different with the popular music. The popular music is the contemporary's music. The contemporary can follow the time to change. But the jazz is different. Because the jazz music can not change. The jazz music type can not change. This is the different from pop music. Because the jazz music always the same type. But the pop music always take us the different feeling. So this is why teenager can accept pop music than the jazz music.

The Liquid Column

Today we do a experiment. It about the floating power. Why some objects can float on the water, some can't not. I think it because the density. Some of the object is bigger than the water. And some objects can pass the water. But it can pass the oil. It mean the object's density is bigger than the water but not bigger than the oil.