Across
- 4. The bouncing back of light when it hits a surface (9 letters)
- 5. The colors seen in a rainbow (7 letters)
Down
- 1. A dark shape made when something blocks light (6 letters)
- 2. A common source of artificial light (4 letters)
- 3. The bending of light (9 letters)
- 6. The bright star that gives us light and heat (3 letters)