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WorksheetsYear 4 Science - Pop Quiz (September)
Total questions: 19
Worksheet time: 19mins
How is sound produced?
By the vibration of particles
By the transfer of particles
The reflection of sound waves off a hard surface can create
An echo
A sound wave
Which of the reading has the highest sound level.
40dB
70dB
120dB
A guitar is struck and starts to vibrate. What will happen next?
The guitar will make light.
The guitar will make sound.
The guitar will become heavier.
What are unwanted sounds called?
Song
Music
Noise
Alarm
The class next door is making a lot of noise. What can we do to keep the noise out?
Build a thicker wall
Scold the children
Hang curtains
Which of the following function as sound absorber?
Carpet
Tables
Chairs
Handkerchief
Which of the following produce low pitch sound?
bird chirping
baby squealing
cow mooing
kettle whistling
Which of the following can produce sound with a different pitch?
Piano
Shaker
Tambourine
Bass drum
Which tool is used to measure sound level?
Lever balance
Sound-level meter
Measuring tape
Stopwatch
Which of the following is the correct unit for measuring sound level?
Kilogram (kg)
Milliliter (ml)
Decibel (dB)
Centimeter (cm)
A man is drilling with a jackhammer. The sound level of a jackhammer can go up to 130 dB.
What can the loud noise from the jackhammer do to the man's ears?
(a)
What can the man do to keep out the noise and protect his ears?
Use carpets
Install curtains
Wear earmuffs
Wear gloves
Wani lives in a housing next to a busy hughway.
What can Wani's parents do to their house to reduce the traffic noise from the highway? Suggest 2 ways.
Which of the following produce high-pitched sound?
train rumbling
bass drum rumbling
cow mooing
kettle whistling
Which of the instruments make sounds through the vibration of strings?
Drum
Maracas
Violin
Xylophone
Can sound travel through every materials?
Yes
Only some materials, include water and air
No
Only travels through air
Which sound warn us of emergency?
Wailing of siren
Telephone ringing
Talking teachers
Car honking
You are standing behind someone who is playing a drum.
The sound you hear will be
quiet
louder
bigger
softer
