Name these scientific concepts exemplified by the Richter, pH, and Mohs hardness ones.
The Hounsfield example of this concept aids interpretation of CT scans, while the Palermo and Torino types assess the impact risk of astronomical objects. Some of these from Earth science use criteria like the collapse of chimneys, white crests forming, and large trees being uprooted. Notable logarithmic examples of these are used to define units that rate loudness and acidity, and Kelvin is an absolute one for temperature. They consist of a progressive series of steps used to measure some phenomenon. Name these scientific concepts exemplified by the Richter, pH, and Mohs hardness ones.
The Hounsfield example of this concept aids interpretation of CT scans, while the Palermo and Torino types assess the impact risk of astronomical objects.
scales [prompt on units]