Mars Rovers

1234567891011
Across
  1. 2. a mountain from which lava and gases come out
  2. 3. make sth work
  3. 7. find the size, quantity of sth using standard
  4. 9. the outside or top layer of sth
  5. 10. mention a subject
Down
  1. 1. that can be used instead of sth else
  2. 4. an arrangement of colours or shapes that is repeated.
  3. 5. progress
  4. 6. not smooth
  5. 8. rover a robot used to explore Mars
  6. 11. a picture.