Across
- 2. the third letter of the Greek alphabet
- 3. the rate at which someone or something is able to move or operate.
- 7. the throwing back by a body or surface of light, heat, or sound without absorbing it.
- 9. strength or energy as an attribute of physical action or movement.
Down
- 1. having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays.
- 4. is the branch of science
- 5. the fourth letter of the Greek alphabet
- 6. having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves.
- 8. the SI base unit of lengthcrest