Answer:
Goes over all the hills and hollows. Bites hard, but never swallows.
Which button does not function when being pressed?
Until I am measured I am not known, Yet how you miss me when I have flown.
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
A little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?