Earth's Oceans Ocean water has definite physical and chemical properties. Earth's water undergoes a predictable cycle. Oceans have a pattern of circulation. A variety of life forms reside in Earth's oceans. The ocean floor has a variety of geologic features.
Humans are dependent upon oceans and their natural resources.
Properties of Matter Matter is everything in the universe that has mass and takes up space. The nature of matter is determined by the types of atoms present and the bonds between them. Matter is classified by its composition. Matter and energy can change through interaction. In addition to classroom music experiences, music is taught for thirty minutes a week by a specialist.