Space

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Across
  1. 2. – A property of light that makes it visible as red, blue, etc. (6 letters).
  2. 4. – The natural world that we need to protect (11 letters).
  3. 6. – A large vehicle used to transport goods (5 letters).
  4. 7. – A material used to make bottles and drinkware (5 letters).
  5. 9. – A state of matter that flows, like water (6 letters).
  6. 10. – A place where recycling processes take place (6 letters).
Down
  1. 1. – A special oven used to melt glass and sand (7 letters).
  2. 3. – The process of using old materials to create new ones (7 letters).
  3. 5. – The process of changing from solid to liquid (4 letters).
  4. 8. – A container for throwing away waste (3 letters).