SCIENCE: Colors in the Visual Spectrum

If you're trying to remember the names - and order - of the colors in the visible spectrum, memorize this name:

ROY G. BIV

Every letter in Roy's name stands for a color in the spectrum, in order:

Red
Orange
Yellow
Green
Blue
Indigo
Violet

RELIGION: The Seven Deadly Sins

Trying to memorize the Seven Deadly Sins? Remember this:

Lucifer Glares, Grandma Slowly Writes Endless Prayers

The first two letters of each word stand in the sentence stand for the seven deadly sins:

Lust

Gluttony
Greed
Sloth
Wrath
Envy
Pride

GOVERNMENT & SOCIAL STUDIES: The Articles of the Constitution

Trying to memorize what the Articles of the Constitution helped establish? Remember this:

Let Every Judge Stand And Defend Rights

The first letter of each word pertains to memory prompts for the seven articles:

1. Legislative Branch
2. Executive Branch
3. Judicial Branch
4. State powers and limits
5. Amending the Constitution
6. Debts, Supreme Law and Oaths
7. Ratifying the Constitution

SPACE & ASTRONOMY: The Planets

To remember the order of the planets, from closest to furthest from the sun, use this sentence:

My Very Educated Mother Just Served Us Nachos

The first letter of each word stands for the name of a planet:

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

(To count Pluto as a planet, just end the sentence with "Nine Pizzas" instead of "Nachos")

Thanks to aluminumtulips for the suggestion!

BIOLOGY: Taxonomic Rank

Trying to remember the order of taxonomic classification from the broadest to narrowest rank? A little Nintendo might help. Just remember the following sentence, as the first letter in each word stands for an order in the taxonomic rank:

Donkey Kong's Princess Called Out For Gorilla Smashing

Domain - Kingdom - Phylum - Class - Order - Family - Genus - Species

Thanks to migo13 for the submission!