Everything that has mass is matter. In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from ...

1. Introduce the idea of building a model of the water cycle. Remind students that they have seen and used drawings and animations as models of a solid, liquid, and gas. Tell students that they will ...

Although the three states of matter are solid, liquid, and gas, not all substances seem to fit perfectly into one of these groups. Take a look at the substance below and see if you can decide whether ...

The water cycle is crucial as it not only enables the availability of water for all living organisms but also regulates ...