Across
- 3. How scientists can tell the temperature range of objects that are far away.
- 5. Light waves with lower energy have a ______ wavelength
- 6. The force that causes black holes to be invisible
- 9. It is an element that helps make the sky appear to be blue
- 10. It cannot escape a black hole
- 11. Has the longest wavelength of the colors.
Down
- 1. The part of the light spectrum that we can see.
- 2. What is light? ____________ radiation
- 4. It has the longest wavelength among the colors green, yellow & blue.
- 7. Has the shortest wavelength of the colors.
- 8. It has the most energy among the colors yellow, orange, & indigo