1. what do waves transfer? a.) both matter and energy b.) neither matter nor energy c.) energy d.) matter 2. what kind of waves require a medium to travel? a.) electromagnetic waves b.) mechanical waves c.) light waves d.) all waves need a medium to travel 3. true or false: sound waves are types of longitudinal waves. true false 4. definitions: the flat line running through the middle of the wave distance from rest position to the crest or trough highest point of a wave distance from two consecutive crests or troughs lowest point of a wave names: 1. trough 2. crest 3. amplitude 4. wavelength 5. rest position 5. sound waves travel faster a.) gases b.) liquids c.) solids d.) sound waves always travel the same speed