How to Spell vibration
vibration
vibration - noun
- A periodic motion of the particles of an elastic body or medium in alternately opposite directions from the position of equilibrium when that equilibrium has been disturbed (as when a stretched cord produces musical tones or molecules in the air transmit sounds to the ear)
Source: Merriam-Webster Dictionary API
Not sure what level your child is at?
Take the free 6 minute placement test.