Next is fire. Fire can be seen. It is denser than air. It has three attributes, namely, sound, touch and form. Following fire there is water.
Water is still more dense, and like fire it can be seen by the naked eye.
It can also be tasted. Water has 4 attributes, namely, sound, touch, form and taste. Earth, the last and densest of all the elements, has five attributes, namely, sound, touch, form, taste and smell. You can see that the last three elements, fire, water and earth, have form. The first two, ether and air have other qualities but no form.