Wavelength is a length. The SI unit for length is the meter (m).
The unit of measure used to describe electrical "pressure" is the "Volt."
The unit used to describe the energy available in a molecule is the electronvolt (eV).
The SI unit used to describe the volume of an object is the cubic meter (m^3).
The metric unit most often used to describe weight is the Kilogram.
a ruler
No units - its a ratio.
The SI unit used to describe the mass of an object is the kilogram (kg).
A scale
Curie or Becquerel
the shortest of all rays
The smallest unit of measurement used to describe the storage capacity of a computer is called a bit. It is a binary digit that can represent either a 0 or a 1, and is the basic building block of all digital data.
Kilogram.