Across
- 2. A microwave is a high-frequency radio wave.
- 5. of light-Light moves at the fastest known speed in the universe. Nothing moves faster than (or even close to) the speed of light. In a vacuum, where there is nothing to slow it down, light travels 186,282 miles per second!
- 8. breaks the light from a single material into its component colors the way a prism splits white light into a rainbow Gamma rays A gamma ray is electromagnetic radiation of the shortest wavelength and highest energy.
- 9. shift- Redshift is a 'shift' of light waves traveling away from Earth
- 10. year (as a measure of distance NOT TIME)- A unit of distance equivalent to the distance of light that travels in one year
Down
- 1. distance in the line of advance wave from any one point to the next point of corresponding phase
- 3. waves a region of the electromagnetic radiation spectrum where wavelengths range from about nano-meters to 1 millimetre (mm). Infrared waves are longer than those of visible light, but shorter than those of radio waves.
- 4. waves Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios.
- 6. spectrum (EMS)- Entire range of wavelengths or frequencies of electromagnetic ranges
- 7. One hertz is equal to one cycle per second.