(Question)
The more an elastic object is stretched or compressed, the greater its elastic potential energy is.  Having read the above passage, choose the right answer to the following question (choices are high potential energy or low potential energy ):   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.  Having read the above passage, choose the right answer to the following question (choices are more or less ):   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  Having read the above passage, choose the right answer to the following question (choices are decrease or increase ):   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