develop simple interactive models to collect data that illustrate how changes in surface features are/were caused by constructive and/or destructive processes.

idk

sorry.

but i may be able to identify that is not you < 3

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)