Given the fact that:  For a given medium such as air, sound has a slower speed at lower temperatures.  Answer the question:   If Mary is blowing an air horn underwater and she raises the temperature of the water, what will happen to the speed of the sound waves generated by the air horn increase or decrease?
increase
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Given the fact that:  Water also gets colder as you go deeper.  Answer the question:   As a diver goes deeper into the water, the water gets warmer or colder.?
colder.
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Given the fact that:  The voice becomes deeper as the larynx in the throat grows larger.  Answer the question:   A person that has a small larynx will have what type of voice High or low?
High
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Given the fact that:  For a given medium, sound has a slower speed at lower temperatures.  Answer the question:   When animals are moving in the cold they are faster or slower?
slower
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