waves 0.0 / 5 ? ScienceWavesGCSENone Created by: Bear McFluffyCreated on: 11-04-18 06:55 426315 Across 1. using ultrasound to blast bladder stones (11) 4. invisible to humans but can be seen by insects (11) 6. emitted by radioactive elements (5) Down 2. characteristic of sound varying due to amplitude (8) 3. shortest frequency (9) 5. heat rays (8)
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