If an instrument is longer than another, what kind of sound difference would you get?

The longer instrument would be lower pitched.

How are pitch and vibration related?

Pitch is how fast or slow a vibration is.

How does an ultrasound machine work?

It uses high pitched sounds to make pictures.

Why is a solid the best material for sound to travel in?

It has the particles very close together and moves quickly.

Why do we have different genres of music?

It shows we have different cultures.

Why do people have different meanings to some sounds?

They have had different experiences.

How do you make an experiment a fair test?

You only change one thing at a time.

When can sound be dangerous?

When you are listening to a loud car stereo for 5 minutes

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Sound unit

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Grade 4 unit in SK

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Questions 20

Answers

1
If an instrument is longer than another, what kind of sound difference would you get?
The longer instrument would be louder.
The longer instrument would be higher pitched.
The longer instrument would be lower pitched.
The longer instrument would be softer.
2
What is a pow-wow?
a special ceremonial dance
a gong ringing
a gathering
when someone fights someone
3
How do instruments like a tuba amplify sound?
It uses the strings.
It uses the hollow space.
It uses the striker to make sound.
It uses the keys you press.
4
Percussion instruments make a sound when you?
bow them
hit them
blow on them
pluck them
5
How are pitch and vibration related?
Vibration makes the soft sound.
A high pitch means a slow vibration.
Pitch is how the vibration goes out.
Pitch is how fast or slow a vibration is.
6
How does an ultrasound machine work?
It makes a low sound to send a picture to the screen
It uses an animal to pick up any sounds.
It makes a loud noise to see what is inside of you.
It uses high pitched sounds to make pictures.
7
Why is a solid the best material for sound to travel in?
It has bigger spaces between the particles.
It is not the best material to travel in.
It has a hard surface.
It has the particles very close together and moves quickly.
8
Where would a megaphone be used?
When you are reading a book.
When you are at a wedding ceremony
When you are at a play-day.
When you are in the school.
9
Why do we have different genres of music?
It is for ceremony.
It is because it is on the radio.
It is a way to have fun.
It shows we have different cultures.
10
If I have a string and want to make it have a higher pitch, I have to...
Pluck the string softer.
Make the string tighter
Pluck the string harder.
Make the string sing
11
How does a thin string affect the sound on an instrument?
It allows the string to make a louder sound.
It makes the pitch higher.
It causes a lower sound.
The string will make a softer sound.
12
Why do people have different meanings to some sounds?
They are almost deaf.
They are natural sounds.
They have had different experiences.
They can't hear like a dog.
13
This area of the ear is filled with many hairs.
outer ear
ear canal
ear drum
cochlea
14
What would be a good conductor of sound?
diapers
egg cartons
metal
kleenex
15
How do scientists explain sound?
It is a long sound.
It is in nature.
It is vibration of the air.
It is the movement of wind.
16
How does a sound wave change when the note is lower?
The waves get taller.
The waves get shorter.
The waves get closer together.
The wave gets farther apart.
17
What are decibels?
Another word used for the jingle bell dress.
How loud a sound is.
How high a sound is.
Something that is in the ear.
18
How do you make an experiment a fair test?
You look at the data and see what happened.
You only change one thing at a time.
You use the materials.
You do the experiment.
19
Falling rocks is an example of what sound?
natural sound
artificial sound
irritating sound
high sound
20
When can sound be dangerous?
When you are listening to a loud car stereo for 5 minutes
When you are in the classroom.
When you are by the ocean.
When you are vacuuming the house.

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