Spot the one that does not fit

Exercise and reference answers

Questions

1. Items

   1. Light wave
   2. Water wave
   3. Sound wave
   4. Wave on a string

   Odd item

   Light wave

2. Items

   1. Crest
   2. Trough
   3. Wavelength
   4. Node

   Odd item

   Node

3. Items

   1. Node
   2. Antinode
   3. Standing wave
   4. Vacuum

   Odd item

   Vacuum

4. Items

   1. Transverse
   2. Longitudinal
   3. Mechanical
   4. Chemical

   Odd item

   Chemical

Instructions

Tap the item that does not belong with the rest.

Explanation