Now build a model of liquid water. place your materials on a sheet of paper. the regular-size
marshmallows can represent the larger oxygen atoms, and the mini marshmallows can represent the
smaller hydrogen atoms. connect the marshmallows with toothpicks using the picture as a guide. create a
total of four molecules. what was difficult about building the model?

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?