Kristin Zhang AASL by Kristin Zhang https://padlet.com/kayucheung326/6nmtyh0ih2af7iwv en-us 2023-09-04 00:42:41 UTC 2023-09-10 15:47:27 UTC hello@padlet.com HW Tue 5 Sep kayucheung326 https://padlet.com/kayucheung326/6nmtyh0ih2af7iwv/wish/2684731784 1) The Richter scale measures the magnitude of an earthquake which is to measure how powerful it is. Decibel Scale is to measure the sound. http://physics.bu.edu/~redner/211-sp06/class-oscillations/sound_decibels.html#:~:text=An%20earthquake%20measuring%206.0%20on,of%20a%2070%20dB%20sound.
2)pH is the negative logarithm of the hydrogen ion concentration:

pH = −log [H+].

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base
https://www.quora.com/How-do-the-numbers-on-the-pH-scale-relate-to-exponents
]]> 2023-09-05 11:39:15 UTC https://padlet.com/kayucheung326/6nmtyh0ih2af7iwv/wish/2684731784 kayucheung326 https://padlet.com/kayucheung326/6nmtyh0ih2af7iwv/wish/2692254813 2023-09-10 15:47:23 UTC https://padlet.com/kayucheung326/6nmtyh0ih2af7iwv/wish/2692254813