Secular humanism is a comprehensive life stance or world view which embraces human reason, metaphysical naturalism, altruistic morality and distributive justice, and consciously rejects supernatural claims, theistic faith and religiosity, pseudoscience, and superstition.
A lava lamp is made by mixing alcohol and water and mineral oil and dyes, combining each separately. By mixing water and alcohol in the correct proportions, the mineral oil can be made to float.
Needed for each demo or small group at the time of the science activity: 1  Alka-Seltzer tablets (2). 2  Jar, drinking glass, or vase with hot water (1). 3  Jar, drinking glass, or vase with ice-cold water (1). 4  Timer or clock that shows seconds (1). 5  Alternative Version: For the lava lamp version the jars/bottles should not be filled full of water.