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Scientific Scales

YGK These Scientific Scales

QuestionAnswer
Type of scale where equal differences in values indicate equal differences in phenomenon Linear scale
Freezing and boiling points of water at 1 atm on Celsius scale 0°C and 100°C
Constant used to define the Kelvin scale since 2019 Boltzmann constant
Value of absolute zero in Celsius –273.15°C
Ratio of an object's speed to the speed of sound Mach number
Scale where a one-unit gap corresponds to a constant ratio Logarithmic scale
Unit used to describe sound intensity Decibel (dB)
Inventor whom the "bel" is named after Alexander Graham Bell
Reference intensity for the decibel scale 10^{-12}W/m^2 (threshold of human hearing)
Formula for pH pH=-log {10}[H+]
Neutral pH value at 25°C 7
Scale used to quantify earthquake shaking amplitude Richter scale
Energy increase for a 1-point difference on the Richter scale About 31.6 times (10^{3/2})
Logarithmic scale that superseded the Richter scale Moment magnitude scale
Wind force scale used on the HMS Beagle Beaufort scale
Beaufort scale range for "hurricane-force winds" 12
2 scales used to measure tornado strength Fujita-Pearson and Enhanced Fujita (EF)
Minimum wind speed for an EF5 tornado 200 mph
Scale of mineral hardness based on scratch resistance Mohs scale
Softest and hardest minerals on the original Mohs scale Talc (1) and Diamond (10)
Scale measuring electronegativity of atoms Pauling scale
Elements with the lowest and highest Pauling scale values Francium (0.7) and Fluorine (4.0)
Scale measuring wind speed and damage of hurricanes Saffir-Simpson scale
Wind speed required for a Category 5 hurricane Over 157 mph
Created by: divyap
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