Sounds travel in the form of waves., , , Sounds travel faster in liquid than solid., , , Without vibration, there will be no sound., , , Volume describes how high or low a sound is., , , The source of sound can be natural or artificial., , , The loudness or softness of a sound is called pitch., , , Sounds make you aware of what is happening around you., , , Artificial sounds are wonderful sounds that come from nature., , , Natural sounds are sounds that we hear every day from non-living things., , , Sound is a type of energy that travels in waves through a medium, such as air, water, or solid objects., , .

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