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how the anemometer changed over time
The shape of the piston hasn't changed over the years, what has changed is the alloys used to make them, so they can withstand higher temperatures.
Gunpowder has not changed at all
it has changed a lot
the atom model
Improved knowledge of the atom via new experiments and development of new theories (e.g. quantum mechanics).
how has neils bohr model changed over time
yes it has changed over many years
Because people's interest has changed over the years.
Wave rock has changed over the years because it has changed colour
has hats changed over the years
Computers have changed in many ways over the years. Technology has advanced< and it has become more easy to do stuff!
it changed by... well it changed... It just changed!
The actors over the years have changed
Our idea of the atom has changed over time as new experimental evidence and theoretical advances have been made. Early models were based on limited information and as technology improved, we discovered more about the structure of the atom. Each new model built upon the shortcomings of the previous one, leading to our current understanding based on quantum mechanics.
whyhas the milk packaging changed over the years