This challenging word search has 48 clues to words hidden in a 16 x 16 grid of letters. There are bonus activities included as well. It would be perfect for a web quest as a review of the solar system. The students can write the answers to the clues on the back as well as find them in the grid to allow for assessment.
This could be done singly or in groups. You can create a word bank for your students if you desire. The students can find words in the grid to match to a clue or they can answer a clue and look for the word in the grid.