Flashcards
Chapter 6 - Waves and sounds
Cards in this deck (13)
- 1What are the types of waves?Transverse and longitudinal waves.
- 2What is the difference between transverse and longitudinal waves?The oscillations of transverse waves
move right-angled to the direction
of travel.
The oscillations of longituinal
waves move in line with the
direction of travel. - 3How many types of longitudinal waves are there? Name them.Sound waves.
- 4What is the formula that relates, frequency, speed and wavelength?Speed=Frequency/Wavelength
- 5What is the other formula for calculating frequency?Frequency=1/Period
- 6What are the types of name effects?Reflection, refraction
and diffraction. - 7How are sound waves projected?Sound waves are caused by
vibrations on objects. - 8How do we reduce sounds in real life? Give an example.We can reduce sounds by
placing 'soft' objects in our
living spaces. For example,
in large halls, sounds are
reduced by having 'soft' materials
such as carpets, curtains,
and padded furniture. - 9What is the speed of sound in air?330m/s or 760mph
- 10Whar are echoes?Echoes are the reflection
of sound waves on
a hard surface. - 11What is the formula to calculate echo?Echo=distance travelled/time taken
=2*distance from wall/echo time - 12What is ultrasound? What are the uses of ultrasound in our daily lives? Name 1 use of ultrasound in our daily life.Ultrasound is the range of sound
which is higher than the range
that humans can hear. Ultrasound is
used in scanning the womb of
pregnant women. It is better than
using X-rays as X-rays can cause
cell damage inside the growing baby. - 13What animals use ultrasound in their daily lives? What do they use ultrasound for?Bats use ultrasound for
locating food and for
locating its way through
caves. This process is
called echo-location.
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- IGCSE Physics Flashcards on Chapter 6 - Waves and sounds, created by Parkash Let on 05/12/2017.
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- Parkash Let
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