Which describes uniformitarianism?
a.
geologic processes operating now are the same as those that operated in the past.
b.
the rates of geologic processes slow down with time.
c.
geologic processes are different over time.
d.
the rates of geologic change increase with time.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final