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Physics P1a

Science P1a Topic 1
Physics Solar System
P1b Topic 2
Topic 3

Key Words
Amplitude The maximum distance of particles in a wave from their
normal positions (volume)

Frequency The number of oscillations of a particle in 1 second

Wavelength The distance between…

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Physics P1a

e.g. SOUND

e.g. WATER


Page 3

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Physics P1a

For each of the graphs below:

· What is the time taken for 1 oscillation?
· What is the frequency?
· What is the amplitude?


2 0.4 0.8 1.2 4 1.0
time (s)
time (s)

Wave Speed
Wave speed is a measure of how fast the energy…

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Physics P1a

Calculating the speed of a wave in water
· Fill the tray with water to a depth
of 1cm
· Measure the length of the tray
· Lift one end of the tray by 1cm
and drop it gently to create a small
· Let the wave…

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Physics P1a

Comparing Waves
True or False?

· Sound travels faster through air than light does
· Light waves are transverse waves
· Sound waves are longitudinal waves
· Sound can travel through a vacuum
· Sound travels faster in solids than in air
· Light travels faster through opaque…

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Physics P1a


Waves are reflected from different surfaces e.g. an echo is a
reflected sound wave

speed = distance covered by the wave d
time taken
v t
· Radio wave transmitters in airports allow air traffic control to track
aircraft by reflecting radio waves.
· Ultrasound is…

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Physics P1a


Wave energy that is not reflected will continue to travel through
the new material. The speed of the wave will change, as will it's

Investigating Refraction

angle of
angle of refraction


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Physics P1a

angle of angle of
incidence refraction

glass 60o 35o

perpex 60o 41o

A bit of fun
What do you notice?
sine i Explain this difference
Refractive =
Index sine r

Focal Length
A lens is a transparent block
that has been shaped so that
it's interface changes the…

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Physics P1a


Page 10

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Physics P1a

Describe the similarities and differences between the way
reflecting and refracting telescopes work.

· Reflectors use a primary mirror instead of an objective
lens ­ this can allow fainter stars to be seen
· Reflectors have a secondary mirror that can block
some of the incident light ­…


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