The alias names, sobriquets, and slogans used by Philippine cities and municipalities are compiled in this short list of city and municipality nicknames.
Light may bend or refract when it strikes a transparent material, such as glass or plastic, both as it enters the material and when it leaves it. This activity allows us to see the effect of refraction.
All sounds are caused by vibrations. Air molecules are pressed closer together by the moving object before being stretched apart. This experiment will show how vibrations are produced along with sounds.
