*Question*
Given the fact that: The closer together the particles in a longitudinal wave are, the greater the amplitude. Answer the question: Fred found a longitudinal wave. The particles are getting closer together. The amplitude is increasing or decreasing?
**Answer**
increasing

*Question*
Given the fact that: Water becomes more dense when it is colder and when it has more salt. Answer the question: If Jim lowers the temperature of water in his bathtub, what happens to the density of the water decreases or increases?
**Answer**
increases

*Question*
Given the fact that: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration. Answer the question: A population of squirrels in a local forest had more food available to them this spring than they did last spring. During which spring will more squirrels leave the area to live somewhere else this spring or last spring?
**Answer**
last spring

*Question*
Given the fact that: The voice becomes deeper as the larynx in the throat grows larger. Answer the question: Eric underwent surgery to increase the size of his larynx. His voice is now higher or deeper?
**Answer**
deeper