A carpenter measures how flat a board is,by placing a level on the board.The level contains a bubble floating in a fluid in a clear tube.If the bubble floats away from the center of the tube,the board is not level.A level works on a principle similar to that of the:
A) specialized end bulbs.
B) kinesthetic receptors.
C) semicircular canals.
D) basilar membrane.

Question

Quizplus · Accepted Answer

The semicircular canals in the inner ear are responsible for detecting changes in rotational acceleration and rotational movement. The level works on a similar principle of detecting changes in the orientation of the board relative to gravity. The other options (A, B, and D) are not related to the function of a level.

A Carpenter Measures How Flat a Board Is,by Placing a Level