Sound Study Guide Study the vocabulary word maps and know the meaning of the words in the packet. All sound is caused by vibrations. Objects that vibrate quickly have a higher pitch then objects that vibrate more slowly. Those have a lower pitch. Thin strings vibrate more quickly, so they have a higher pitch. Thick strings vibrate more slowly, so they have a lower pitch. You can change the pitch by tightening or loosening the strings. This speeds up or slows down the vibrations of the string. All vibrations must travel through a medium in order to be heard. They can travel through a solid, liquid, or a gas. Vibrations travel fastest through a solid than a liquid or a gas. Molecules in a solid are close together. This allows the sound waves to travel easier. cannot travel in a vacuum (such as outer space) because there are no air molecules for the vibrations to travel along. We can hear sound through a closed door because the vibrations travel through the air to the door and then through the door to the air on the other side. The vibrations then travel through the air to our ears where we identify them as sound.
Sound Study Guide Study the vocabulary word maps and know the meaning of the words in the packet. All sound is caused by vibrations. Objects that vibrate quickly have a higher pitch then objects that vibrate more slowly. Those have a lower pitch. Thin strings vibrate more quickly, so they have a higher pitch. Thick strings vibrate more slowly, so they have a lower pitch. You can change the pitch by tightening or loosening the strings. This speeds up or slows down the vibrations of the string. All vibrations must travel through a medium in order to be heard. They can travel through a solid, liquid, or a gas. Vibrations travel fastest through a solid than a liquid or a gas. Molecules in a solid are close together. This allows the sound waves to travel easier. cannot travel in a vacuum (such as outer space) because there are no air molecules for the vibrations to travel along. We can hear sound through a closed door because the vibrations travel through the air to the door and then through the door to the air on the other side. The vibrations then travel through the air to our ears where we identify them as sound.
Science%20Sound%20Study%20Guide.docx