Fill in the crossword puzzle below based on your knowledge of
what makes up the diffuse background.
Enter your answer for each clue in the box provided for you.
At any time, you can press the button (found below all the clues) to add
your answers to the crossword. To change a single word, go back to where
you entered the word in the box, delete the incorrect text, enter the new
word, and press the button to have it show up in the puzzle. Changes will only
show up if they are done this way. They will not show up if the change is
just made in the puzzle. If you need to
start over, press the erase button. This will clear the entire puzzle.
If the computer beeps at you and refuses to accept any more input to an
answer, you have entered more than the allowable number of letters for that
Do not include spaces or hyphens in your answers.
This activity was developed by Cheryl Carter, Bladensburg High School, Bladensburg, MD