Quiz

1234567891011121314151617
Across
  1. 3. waste into useful products.
  2. 5. fuel that emits only water on combustion.
  3. 6. that powers the Sun.
  4. 7. changes in Earth's weather patterns.
  5. 8. central to greenhouse gas discussions.
  6. 12. national space agency.
  7. 15. hydrogen produced using renewable energy.
  8. 17. lunar exploration programme.
Down
  1. 1. of materials at dimensions below 100 nm.
  2. 2. plastic fragments now found in oceans and even human blood.
  3. 4. technology.
  4. 9. component of electric vehicles.
  5. 10. material made of a single layer of carbon atoms.
  6. 11. abbreviation for electric vehicle.
  7. 13. human spaceflight mission
  8. 14. that exploits the behaviour of matter at the atomic scale.
  9. 16. energy source increasingly used on rooftops.