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Across
- 1. Related to the large plates that make up Earth's surface
- 3. A form of energy that makes things warm
- 6. A tiny particle of light energy
- 7. A material that does not let electricity or heat pass through easily
- 8. Vibrations that travel through the air and are heard by ears
Down
- 2. A form of energy used to power lights and machines
- 4. A tool that makes far-away things look closer
- 5. A mixture where one substance dissolves completely in another