Across
- 2. Radio wavesRadio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios.
- 5. rays-Ultraviolet radiation is electromagnetic radiation or light having a wavelength greater than 100 nm but less than 400 nm.
- 7. Bang Theory -Around 13.7 billion years ago, everything in the entire universe was condensed in an infinitesimally small singularity, a point of infinite denseness and heat. Suddenly, an explosive expansion began, ballooning our universe outwards faster than the speed of light.
- 8. Speed 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 m iles per second!
- 9. wavesa region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers (nm) to 1 millimeter (mm). Infrared waves are longer than those of visible light, but shorter than those of radio waves.12.Visible light- the part of the electromagnetic spectrum that is visible to the human eye.
- 11. MicrowavesA microwave is a high-frequency radio wave.
- 12. Gamma raysA gamma ray is electromagnetic radiation of the shortest wavelength and highest energy.
- 15. One hertz is equal to one cycle per second.
- 16. A crest is a point on a surface wave where the displacement of the medium is at a maximum.
- 18. describes the number of waves that pass a fixed place in a given amount of time.
Down
- 1. all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
- 3. billionth of a meter.
- 4. Electromagnetic spectrum (EMS)- Entire range of wavelengths or frequencies of electromagnetic ranges
- 5. are a form of electromagnetic radiation, similar to visible light.
- 6. the lowest point on a wave
- 10. spectrum, in optics, the arrangement according to wavelength of visible, ultraviolet, and infrared light.
- 13. Light year (as a measure of distance NOT TIME)- A unit of distance equivalent to the distance of light that travels in one year
- 14. Red shift- Redshift is a 'shift' of light waves traveling away from Earth
- 17. Wavelength-the distance in the line of advance wave from any one point to the next point of corresponding phase
- 19. Spectroscope breaks the light from a single material into its component colors the way a prism splits white light into a rainbow