Sound Flashcards
What is sound caused by?
Vibrations
Sound vibrations happen very quickly. What kind of movement has to happen for sound vibrations to occur?
Back and forth movements
Sound vibrations can transfer from one material to another. What materials can sound vibrations transfer from?
Solids, liquids, and gases
Do sound vibrations travel through some materials better than others?
Yes! For example, sound travels better through liquid than through air.
A measure of how high or low something sounds and has to do with the speed of the vibrations that produce the sound.
Pitch
Does the thickness of a material have anything to do with the pitch?
Yes! Changing the thickness of a material can change the pitch of the sound.
Thicker materials vibrate more slowly. How does this affect the pitch?
Thicker materials vibrate slower, so the pitch is lower.
For example, a thicker person is going to run a race more slowly. So, they are going to place lower at the end of the race when compared to people that ran quicker.
Thinner materials vibrate faster. How does this affect the pitch?
Thinner materials vibrate faster, so the pitch is higher.
For example, a thinner person is going to run a race faster. So, they are going to place higher at the end of the race when compared to people that ran slower.
When the length of a vibrating material is changed, what happens?
The pitch changes too! If you stretch a material out it is going to make it thinner! If you scrunch a material up, it is going to make it thicker!
Longer materials vibrate slower. What happens to the pitch?
The pitch is lower!
Shorter materials vibrate faster. What happens to the pitch?
The pitch is higher!
If you increase the tension of a material, what happens to the vibration and the pitch?
When you increase the tension, the material vibrate faster and the pitch is higher.
If you decrease the tension of a material. what happens to the vibration and the pitch?
When you decrease the tension, the material vibrates slower and the pitch is lower.
A measure of how loud or soft something sounds and is related to the strength of the vibrations.
Volume
If more force is put on a material, what happens to the vibrations and the volume?
If you put more force on a material then it produces stronger vibrations and a louder volume.