Kaleidoscope. A kaleidoscope is a cylinder with mirrors containing loose, colored objects such as beads or pebbles and bits of glass. As the viewer looks into one end, light entering the other creates a colorful pattern, due to the reflection off of the mirrors.
Union dues. Union dues are a regular payment of money made by members of unions. Dues are the cost of membership; they are used to fund the various activities which the union engages in. Nearly all unions require their members to pay dues. Variation. Many union members pay union dues out of their wages, although some unions collect dues separately from the paycheck.
Tides are the rise and fall of the levels of the ocean. They are caused by the gravitational pull of the Sun and Moon as well as the rotation of the Earth. Cycles of a Tide. Tides cycle as the Moon rotates around the Earth and as the position of the Sun changes. Throughout the day the sea level is constantly rising or falling.