WorksheetsDLP SCIENCE FORM 2 | CHAP10 SOUND WAVES
Total questions: 11
Worksheet time: 13mins
definition of sound?
(answer in all small caps)
(a)
3 characteristics of sound waves
requires a medium to propagate
can be reflected or absorbed
the loudness of the sound depends on the frequency of vibration
propagate at different speeds in different mediums
sounds have different strengths and pitches. this is why we are able to distinguish and recognize every sound.
True
False
the 1)...... the altitude, the 2)...... the sound is.
1) lower - 2) louder
1) louder - 2) lower
1) higher - 2) louder
1) higher - 2) quieter
An experiment was carried out to find out the relationship between the frequency of waves and the pitch of a sound. It is found out that sound (A) has a lower pitch compared to sound (B).
What is the conclusion?
the higher the frequency of sound waves, the higher the pitch of a sound is.
the lower the frequency of sound waves, the higher the pitch of a sound is.
what is the unit used to measure the frequency of sound waves?
aedes (aE)
hertz (Hz)
beepboopbeep
joule (J)
Alice is moving to her new apartment located in New York. Every night, she cannot sleep well because her home is surrounded by busy cities and loud traffic.
What adjustments can she make to her home so that the outside noise won't be too loud for her to sleep? (pick 2)
install marble tiles
install a carpeted floor
use a pair of thick slippers
use thick curtains
arrange the medium by how rapid can sound be transferred from lowest to highest (answer like this: answer, answer, answer [all in small caps])
(a)
Two teens are put near an ambulance but at different distances with the girl being nearer to the ambulance than the boy. After that, the ambulance's alarm is turned on. The girl said she heard a higher-pitched alarm while the boy said he heard a lower-pitched alarm.
How does this happen?
Doppler effect: the further you are from the source of the sound, the lower the pitch you'll hear
Doppler effect: the further you are from the source of the sound, the higher the pitch you'll hear
Which one of these is untrue?
Ultrasound can be heard by bats and dolphins
Human ears aren't capable of hearing a sound with a frequency of more than 20 Hz
Sonar is used by ships to detect objects underwater
Sonar is often used in shipping industries, medical sectors and fisheries
Choose 3 places that an echo can be heard in.
Open fields
Caves
Meadows
Enclosed halls
Empty rooms
