| A | B |
|---|
| Kelvin | is a unit increment of temperature and is one of the seven SI base units |
| kinetic energy | energy of motion |
| inketic theory | look up |
| Kingdom | The broadest taxonomic category consisting of phyla or divisions. |
| Lanthanide | Rare earth elements in the periodic table, that are hard to recover on earth |
| law | look up |
| laws of motion | emphasized that inertia is always present in matter |
| law of superposition | look up |
| layer | single thickness of usually some homogeneous substance; |
| legit | look up |
| light year | the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers |
| lithosphere | look up |
| lipids | any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with proteins and carbohydrates, the chief structural components of living cells. |
| longitude | look up |
| luminosity | look up |
