puzzle;

12345678910
Across
  1. 2. a piece of equipment that produces a loud warning sound.
  2. 4. a group of letters added to the end of a word to change its meaning.
  3. 6. forming a particular shape or objects with clay soil.
  4. 7. the worth or usefulness of something.
  5. 10. to make something more colourful and attractive.
Down
  1. 1. objects used to reflect light.
  2. 3. something made by humans.
  3. 5. to change into a solid or made hard by freezing.
  4. 8. light is a form of energy which can be detected with our eyes.
  5. 9. the liquid part of a plant, fruit or vegetables.