| whatissound.pdf |
| propertiesofwaves.pdf |
| featuresofatransversewave.pdf |
| howdosoundwavestravel.pdf |
| whatisawave.pdf |
| whatissoundquality.pdf |
| kinds_of_waves.pdf |
| howdowavesrefraction.pdf |
| howarewavesreflected.pdf |
| howdolightwavestravel.pdf |
| uses_of_light_waves430.jpg |
| light_matching435.jpg |
| classifying_refracting_materials427.jpg |
| light424.jpg |
| sound_and_music_crossword421.jpg |
| sound_and_frequency_419.jpg |
| waves_and_sound423.jpg |
| how_do_these_sound420.jpg |
| how_loud_is_too_loud422.jpg |
| light_rays_and_concave_lenses432.jpg |
| diagram_of_a_sound_wave428.jpg |
| diagram_of_a_wave425.jpg |
| light_waves426.jpg |
| reflection434.jpg |
| refraction433.jpg |
| refraction433.jpg |
| light_rays_and_convex_lenses431.jpg |
| wave_diagram429.jpg |
