What Is Sound? | Design Squad
103.8 هزار بار بازدید -
14 سال پیش
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This Design Squad Nation animation
This Design Squad Nation animation shows that when an object vibrates, it sets the surrounding air molecules in motion. The resulting sound waves travel to the ear, and the brain interprets them as sound.
For more videos, activities and games visit pbskids.org/designsquad
For more videos, activities and games visit pbskids.org/designsquad
14 سال پیش
در تاریخ 1389/10/08 منتشر شده
است.
103,855
بـار بازدید شده