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Across
- 1. The band of colors formed when white light is split
- 3. Vibrations that travel through the air and are heard by ears
- 7. A material that does not let electricity or heat pass through easily
- 8. The central part of a cell that controls its activity
Down
- 2. A path that electricity travels along
- 3. A sample of something used for study
- 4. To write down information for later use
- 5. When a solid mixes into a liquid and seems to disappear
- 6. A mountain with an opening that can erupt hot lava