Simplify the following text for a Grade 8 native English-speaking person.
Original: Peak-to-peak amplitude is the change between peak ( highest amplitude value ) and trough ( lowest amplitude value , which can be negative ) .
Simplified: The distance from the top of one peak to the bottom of another is called peak-to-peak amplitude . Another way to describe peak-to-peak amplitude is to say that it is the distance between the maximum positive value and the maximum negative value of a wave .