4: Wave Models / Light
4-PS4-1. Develop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move. [Clarification Statement: Examples of models could include diagrams, analogies, and physical models using wire to illustrate wavelength and amplitude of waves.]
4-PS4-2. Develop a model to describe that light reflecting from objects and entering the eye allows objects to be seen.
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