(Question)
The more an elastic object is stretched or compressed, the greater its elastic potential energy is.  When we crumple a rubber band it has high potential energy or low potential energy?
(Answer)
high potential energy


(Question)
Higher frequency waves have greater energy.  Wendy decreases the frequency of her radio's sound waves. These waves now have more or less energy?
(Answer)
less


(Question)
The more acidic a solution is, the closer its pH value will be to 0  Erin is trying to get her solution to have a pH as close to zero as possible. The best way for Erin to do that is to have the acidity of the solution decrease or increase?
(Answer)
increase