You can make foam balls on speaker output Model . This will be related to sound.
You can make a little tiny see-sawwith a movable pivot, and use it to illustrate the
three classes of levers, and to demonstrate how work energy is conserved in the
operation of levers.
Working model for what, exactly?
a physics model can be excellent if it has a right demonstration correct working and display and capability to impress the audience right;y
A Burgular Alarm
There are several ways one can make a working model of an earthquake. You can use an empty 2 liter bottle, clay, baking soda, and dish detergent to make a working earthquake.
manhattan
First, get a good understanding on the "anything" you want to model.
Ask your teacher.
see your physics book
what the tts wt im searchin for!!!!!! I believe only one working model cannot be constructed in physics - that of the universe itself
COLING BELL give the lsit of working models in the wikipidea
Don't make it
If you want to make a WORKING model for nuclear physics, look at the Manhattan Project, and you'll be joining Miss Curie. Please rephrase the question or figure out what it is exactly you should be asking for.