General Information (U-Z)

Vanadium — Vanadium is a metal element. Its symbol is V.

Volcano — A volcano is a vent in the earth's crust.

Water — Water is a liquid oxide of hydrogen.

Water table — The water table is the level of ground below which the rocks are saturated with water.

Welding — Welding is the process of joining two pieces of metal together by hammering, pressure or fusion.

Wood's Metal — Wood's metal is a fusible alloy consisting of 50 per cent bismuth, 25 percent lead, 12.5 per cent tin and 12.5 per cent cadmium.

Ytterbium — Ytterbium is a metal element with the symbol Yb.

Yttrium — Yttrium is a metal element with the symbol Y.