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Wave is the disturbance that propagates and transfers energy in the direction of
propagation
Transverse wave consists of
crests and troughs
The longitudinal wave consists of
compressions and rarefactions
The highest point of the particles of the medium in the transverse wave is known as
crest
what is the measuring unit of wave velocity
Metre/second
Velocity of sound waves through air =
340 m/s
Sound velocity is the greatest through
solid
The distance that is covered by the wave in one second is called
wavelength
is the maximum displacement of medium particles away from their rest position
Amplitude of the wave
water waves and sound waves are ....... waves
mechanical waves
Rarefaction is the area at which the medium particles.
are faraway from each other.
The electric bell produces pulses of.
compressions and rarefactions
The periodic time of a tuning fork which makes 240 waves in one minute equals
1/4 sec
1 Millimeter equals .......Nanometer
1o6
All the electromagnetic waves have the same........ in vacuum.
velocity
the scientists saw the explosions that occur on the Sun surface, but they couldn't record the sound of these explosions because the sound
needs a medium to travel through.
The mathematical relation between the velocity and wavelength is
velocity = frequency x wavelength.
why sound waves are longitudinal waves
because the particles of the medium vibrate along the direction of wave propagation.
Jacuzzi is a tub of physiotherapy, where water moves in the form of
circular
Why can lights travel in a vacuum but not sound?
Due to the electromagnetic nature of light waves.
If the distance between the centre of the third compression and the centre of the fifth compression on the wave propagation is 20 cm, then the wavelength of this wave is
10 cm
A girl stands watching water waves, she saw 4 waves passing in 2 seconds.The wavelength of each wave is 0.5 m, so:Wave frequency =
2Hz
Jerome and Claire are doing the Period of a Pendulum Lab. They observe that a pendulum makes exactly 10 complete back and forth cycles of motion in 21.8 seconds. Determine the period of the pendulum.
2.18 sec
The speed of a wave in a certain medium is 900 m/s. If 3000 waves passes over a certain point of the medium in 2 minutes, then find its wavelength?.
λ = 36 m
A boat at anchor is rocked by waves whose velocity is 20m/s and crests are 200m apart. The boat bounces up once in every
10 sec