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Across
- 3. When light bounces off a surface like a mirror
- 5. The invisible force that pulls things toward the Earth
- 6. How tightly packed the matter is in something
- 8. A tool that makes far-away things look closer
Down
- 1. The steps followed to do an experiment
- 2. The speed of something in a given direction
- 4. To say what you think will happen based on evidence
- 7. The amount of matter in an object