Water is found in different places. Objects sink or float in water. Water has weight. Water should not be polluted or wasted. Rocks have similarities and differences.
Sands have similarities and differences.
Rocks and sand have weight. The properties of sand change when water is added. The Sky We live on the planet Earth which is surrounded by sky. The moon, stars and planets are always somewhere in the sky, but are seen best at night. The sun is a bright star in the sky that provides heat and light.