Geology
- The geological periods of the Paleozoic to Cenozoic eras are Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous:
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- Pregnant Camels Ordinarily Sit Down Carefully, Perhaps Their Joints Creak
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- Mineral Hardness scale 1-10:
For Talc(=1) Gypsum(=2) Calcite(=3) Fluorite(=4) Apatite(=5) Orthoclase(=6) Quartz(=7) Topaz(=8) Corundum(=9) Diamond(=10)
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- Toronto Girls Can Flirt And Only Quit To Chase Dwarves .
- Terrible Giants Can Find Alligators Or Quaint Trolls Conveniently Digestible
- Tall Girls Can Fight And Other Queer Things Can Do!
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- For differentiating stalactites and stalagmites.
- The 'mites go up and the 'tites come down. When one has ants in one's pants, the mites go up and the tights come down. (Note: In a strict scientific sense, a mite is not an ant, although "mite" in common speech can refer to any small creature.)
- Stalactites hang tight, hang down like tights on a line; stalagmites might bite (if you sit on them), might reach the roof.
- Tights hang from the Ceiling, and Mites crawling around on the Ground
- You need might to do push-ups (from the floor). You must hold tight doing chin-ups (off the ceiling).
- Stalactites are on the ceiling. Stalagmites are on the ground.
Read more about this topic: List Of Mnemonics