Key vocabulary

12345678910111213
Across
  1. 4. term- continuing for a long time
  2. 5. – a way of solving a problem
  3. 7. energy - power which comes from natural resources, like the sun or wind
  4. 10. – different option
  5. 12. out- to use all of something so that there is none left
  6. 13. – something you have and can
Down
  1. 1. – relating to the air,water and land
  2. 2. – to give something
  3. 3. to make something, like air or water dirty or harmful
  4. 6. – a way of doing things
  5. 8. - a type of machine which uses air or water to produce power assemble- to build something by putting parts together
  6. 9. – small in amount or number
  7. 11. – a very dangerous or difficult situation