Short Story - Vocabulary

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Across
  1. 2. - Study of movement.
  2. 5. - Up and down
  3. 7. - a part of something that affects a result.
  4. 8. - Force that pulls you down to earth.
Down
  1. 1. - Increase of speed.
  2. 3. - Anything that will push or pull.
  3. 4. - Move by itself - no human control.
  4. 6. - People that design roller coasters.