Sound

Question 1

What is sound caused by?

Answer 1

Vibrations

Question 2

Sound vibrations happen very quickly. What kind of movement has to happen for sound vibrations to occur?

Answer 2

Back and forth movements

Question 3

Sound vibrations can transfer from one material to another. What materials can sound vibrations transfer from?

Answer 3

Solids, liquids, and gases

Question 4

Do sound vibrations travel through some materials better than others?

Answer 4

Yes! For example, sound travels better through liquid than through air.

Question 5

A measure of how high or low something sounds and has to do with the speed of the vibrations that produce the sound.

Answer 5

Pitch

Question 6

Does the thickness of a material have anything to do with the pitch?

Answer 6

Yes! Changing the thickness of a material can change the pitch of the sound.

Question 7

Thicker materials vibrate more slowly. How does this affect the pitch?

Answer 7

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.

Question 8

Thinner materials vibrate faster. How does this affect the pitch?

Answer 8

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.

Question 9

When the length of a vibrating material is changed, what happens?

Answer 9

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!

Question 10

Longer materials vibrate slower. What happens to the pitch?

Answer 10

The pitch is lower!

Question 11

Shorter materials vibrate faster. What happens to the pitch?

Answer 11

The pitch is higher!

Question 12

If you increase the tension of a material, what happens to the vibration and the pitch?

Answer 12

When you increase the tension, the material vibrate faster and the pitch is higher.

Question 13

If you decrease the tension of a material. what happens to the vibration and the pitch?

Answer 13

When you decrease the tension, the material vibrates slower and the pitch is lower.

Question 14

A measure of how loud or soft something sounds and is related to the strength of the vibrations.

Answer 14

Volume

Question 15

If more force is put on a material, what happens to the vibrations and the volume?

Answer 15

If you put more force on a material then it produces stronger vibrations and a louder volume.

Question 16

If less force is put on a material, what happens to the vibrations and the volume?

Answer 16

If you put less force on a material then it produces weaker/slower vibrations and a quieter volume.

Question 17

How does distance affect volume and sound?

Answer 17

The greater the distance between the source of the sound vibrations, the softer the volume is and the quieter the sound is!