Dry boards are disconnected, rainbow, and usually contain one high card: K72, A83, Q52. Few draws exist, so a caller either has a piece or has nothing. These boards suit the raiser, and a small bet with a wide range works well.
Connected and coordinated boards — 987, JT8, two hearts, three to a straight — do the opposite. Every gutshot, flush draw and two-pair combination is live for the caller, and none of them are folding to a small bet. Here you narrow down: bet bigger with hands that want to charge draws, and check the rest rather than firing into a range that is happy to continue.
Paired boards (K K 4, 8 8 3) sit in between. They miss both players most of the time, which is precisely why a small bet gets through often.
The practical rule: ask which player's range the flop favours. If it is yours, bet small and often. If it is theirs, bet rarely and for a reason.