Riddles about candles

I look taller when I am young. But as I get old, I become shorter and shorter. What Am I?

Tall I am young, short I am old. While with life I glow, wind is my foe. What am I?

You measure my life in hours and I serve you by expiring. I'm quick when I'm thin and slow when I'm fat. The wind is my enemy.

My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.

I'm tall when I'm young and I'm short when I'm old. What am I?

I'm tall when I'm young, I'm short when I'm old, and every Halloween I stand up inside Jack O Lanterns. What am I?

I live in a house. Each Halloween I stand in a jack-o-lantern and get shorter as I grow old. What Am I?