science crossword

2. or extending across or in a cross direction; cross.
4. tone is a low, similar to the drone of a bagpipe.
5. of substances by a tissue, as of nutrients through the wall of the intestine.
6. image; representation; counterpart.
7. the distance, measured in the direction of propagation of a wave.
10. number of periods or regularly occurring events of any given kind in unit of time, usually in one second.
12. transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
13. process in which energy is emitted as particles or waves.
14. measure of the warmth or coldness of an object or substance with reference to some standard value.
15. Drawing on outside air gives the batteries a higher ratio and lowers the material costs.

1. in the direction of the length of a thing; running lengthwise.
3. variation of the index of refraction of a transparent substance, as glass, with the wavelength of light.
8. array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass.
9. transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.
11. change of direction of a ray of light, sound, heat.