Echoes are useful for bats because through it bats can detect
'Dolphins' can capture their prey using
When sound travels, the air molecules vibrate
If a tuning fork makes a single musical note, it will produce
An example of wind instrument is
The sound of a whistle is
The most important characteristic of a 'music' is its
Frequency is measured by unit which is called
Animal that uses echoes is known as
The highest level of frequency which human ear can detect is
Sound travels fastest in
A hand bell stimulates the
To shape a metal
The height of a wave is known as
Ultrasound is used instead of x-rays because x-rays can
The depth of the sea or ocean is calculated by a
Bats produce sounds with
The higher the frequency, the more the
Sounds of dead leaves and cats are known as
Sound travels fastest in solids because the
When two or more notes with different pitches are sounded together,
A reflected sound is known as
Rapid backward and forward movements are known as
All musical instruments make
A long thick tube produces
Wind instruments make sound by allowing air to
When a note is played by a string instrument, it produces
The pitch of every note is a certain
"Ultrasound" can
The denser the solid, the
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