1. Grid - a pattern of horizontal and vertical lines forming squares of uniform size on a map or chart.
2. Helium - a colorless, odorless, tasteless gas (Helium becomes a liquid near absolute zero. Liquid helium is used to cool Jefferson Lab's accelerator components.)
3. HTML - an acronym for HyperText Markup Language; the programming language or code used for the creation of internet web pages.
4. Kelvin - a temperature scale that begins at absolute zero, where there is no molecular movement (Water freezes at 273 K and boils at 373 K.)
5. Laboratory - a place equipped for scientific research, experiments or testing.
