3. Put your finger on your neck and say “aah”
as loud as you can.
Now say it as soft as you can.
You can not only hear the sound, but you
can feel the vibration inside your throat.
Try this:
4. WHAT IS SOUND?
So Sound is a kind of energy that can be heard.
A sound is made when things vibrate.
Sound is a form of energy that can be heard and travels in
waves.( longitudinal waves).
8. We can recognize many familiar sound
without seeing the object that producing
them.
we can differentiate between the voice and
the woman voice.
9. LOUDNESS OR QUIETNESS
Volume is the loudness or the quietness of a sound.
Loud sounds use a lot of energy.
Soft sounds use a little energy.
We can make it louder or quitter by changing the amplitude of
the height of the wave.
The higher the amplitude, the louder the sound. The lower the
amplitude the quitter the sound.
Louder
quitter
10. PITCH
Pitch is the highest or lowest sound an object makes.
When the vibrations are fast you hear a
high pitch. When they’re slow, you hear a low pitch.
Objects that vibrate slowly, make a low pitch.
Objects that vibrate quickly, make a higher pitch.
High Pitch Low Pitch
11. Sound is a kind of energy that can be heard.
A sound is made when things vibrate.
Sound travels in waves.
Sound must travel through matter to be heard
Volume is how loud or soft a sound is.
Pitch is how high or low a sound is.
Summary
