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Across
- 1. The central part of a cell that controls its activity
- 3. Vibrations that travel through the air and are heard by ears
- 6. A sudden shaking of the ground caused by movements deep inside Earth
- 7. A state of matter that holds its shape
Down
- 2. The band of colors formed when white light is split
- 4. Any living thing such as a plant or animal
- 5. The distance between one wave peak and the next
- 8. Facts and information collected from experiments