Light

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. Measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used (5)
  2. 3. A straight line extending from a point (plural) (4)
  3. 6. The power to do work or make things move (6)
  4. 7. A light, self-propelled movement upwards or forwards (6)
  5. 9. A poker hand with 5 consecutive cards (8)
  6. 10. A mark to indicate a direction or relation (plural) (6)
  7. 11. A circular segment of a curve (4)
  8. 12. Optical device having a triangular shape and made of glass or quartz (5)

Down

  1. 2. A formation of people or things one beside another (plural) (5)
  2. 4. The space between two lines or planes that intersect (5)
  3. 5. To be bright by ___ or casting light (7)
  4. 8. Polished surface that forms images by reflecting light (6)
  5. 9. How fast something moves (5)