Spot the one that does not fit

Exercise and reference answers

Questions

1. Items

   1. Viscosity
   2. Period
   3. Frequency
   4. Amplitude

   Odd item

   Viscosity

2. Items

   1. Massless string
   2. Rigid support
   3. Small bob
   4. Heavy rope

   Odd item

   Heavy rope

3. Items

   1. Second
   2. Microsecond
   3. Time unit
   4. Hertz

   Odd item

   Hertz

4. Items

   1. Coupled parts
   2. A medium
   3. Material
   4. A vacuum

   Odd item

   A vacuum

Instructions

Tap the item that does not belong with the rest.

Explanation