1. When the sound travels through solids, the vibration of the particles occurfast solids? 2. The sound travels through air 3. In medium, sound wave travel faster. 4. The affects the speed of sound as it travels. 5. Sound travel faster in solid than in 6. is the main source of light on Earth. is not a property of light. 7. 8. A light travels in a line. . 9. A shadow formed when light is _ by an object. 10. Objects that allow light to pass through them are considered as materials​