Across
- 3. is a description of the average kinetic energy of the molecules in a substance (strictly speaking, the average “back and forth” or translational kinetic energy of the molecules).
- 4. is what makes “stuff” move. For example, it takes energy to cause something to move faster, change direction, or break apart.
- 5. refers to energy that transfers from one object or substance to another because of a difference in temperature.
- 7. Wavelengths of radiation just shorter than the human eye can sense, from about 0.01 to 0.4 micrometers, make up the ultraviolet (UV) portion of the electromagnetic spectrum.
- 11. (incoming solar radiation) received at the top of the atmosphere is believed to be constant when averaged over a year, although it may vary slightly over long periods of time with fluctuations in the Sun’s temperature.
- 12. The human eye is sensitive to radiation wavelengths of only a fairly narrow band of the electromagnetic spectrum known as visible light— wavelengths between about 0.4 and 0.7 micrometers (om; 1 micrometer = one-millionth of a meter).
- 13. Scale The temperature scale that is most widely used—and announced in public weather reports—in the United States is the Fahrenheit scale (named after Gabriel Daniel Fahrenheit, the eighteenth-century German physicist who devised it).
- 14. Wavelengths of radiation just longer than the human eye can sense, between 0.7 and about 1000 micrometers (1 millimeter), make up the infrared (IR) portion of the electromagnetic spectrum.
- 15. refers to force acting over distance.
Down
- 1. sometimes referred to as radiant energy.
- 2. is entirely in the thermal infrared portion of the spectrum and is referred to as longwave radiation.
- 6. the energy of movement
- 8. Scale In most other countries the Celsius scale (named for Anders Celsius, the eighteenth-century Swedish astronomer who devised it) is used either exclusively or predominantly.
- 9. under extremely high temperatures and pressures, nuclei of hydrogen fuse together, forming helium.
- 10. or emission—is the process by which electromagnetic energy is emitted from an object.