Optics
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
1.
When the sunlight passes from the air through rain droplets before reaching our eyes
4.
Rays that are the highest forms of electromagnetic radiation
5.
Waves where the particles of the medium vibrate with an up and down motion
Down:
2.
The branch of science that deals with the study of waves that travel through the Earth
3.
Property that varies from colour to colour
OK