Science// Light Waves 0.0 / 5 ? FunFunFunNone Created by: issy_Created on: 16-06-14 18:34 25643178 Across 1. Light travels ....... when there are fewer particles (6) 4. ......... Travels faster than light in a vacuum (7) 5. Light travels faster when there is ........ (7, 2, 3) 7. ........... are slowed by particles (5, 5) 8. Light is produced by.... (8, 7) Down 2. Light doesn't need ....... to travel (9) 3. Light is a .... of energy (4) 6. Light travels in a ....... (8, 4)
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