After the sun & moon, this planet is the brightest object in the sky
The pH in pH scale stands for the "potential of " this element
In geometry it's a quadrilateral with 2 parallel sides; in anatomy, it's the smallest wrist bone
g. Acceleration due to this, varies slightly with latitude since the Earth is not a perfect sphere
Riboflavin deficiency can cause photophobia, abnormal sensitivity to this
This malaria-fighting substance is extracted from the bark of the cinchona tree
This, sound composed of a random mix of frequencies, comes in "white" & "pink" types
Titan, a moon of this planet, has a thicker atmosphere than Earth
This unit of weight is abbreviated mg.
The first modern ones of these, called Lucifers, were invented in 1827 & struck on sandpaper