The document compares three common temperature scales: Fahrenheit, Celsius, and Kelvin. It lists the people who developed each scale, when they were developed, and how they were defined. Key temperatures are also listed in each scale, along with conversion formulas between the scales.

1. Temperature Scales – Answer Key
Content Fahrenheit Celsius Kelvin
WHO
Daniel Gabriel Fahrenheit Anders Celsius Lord Kelvin
WHEN 1724 1743 1848
HOW/WHY Used a brine = 0° Used Freezing water = 0° Since there are no negatives in
Used body temp = 100° Used Boiling water = 100° thermal energy, he started the
scale at zero.
Temperature:
Boiling Water 212 100 373
Body Temp 98 37 310
Room Temp 77 25 298
Freezing water 32 0 273
Liquid Nitrogen -346 -196 63
Absolute Zero -459 -273 0
Conversions:
Fahrenheit F = C*9/5 + 32 F = K*9/5 + 32
Celsius C = F-32*5/9 C = K – 273
Kelvin K = F+459*5/9 K = C + 273