Pages in this set

Page 1

Preview of page 1
Physics P1a




Biology
Chemistry
Waves
Science P1a Topic 1
Lenses
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
(pitch)

Wavelength The distance between…

Page 2

Preview of page 2
Physics P1a




e.g. SOUND




oscillation
e.g. WATER
LIGHT




2

Page 3

Preview of page 3
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




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…

Page 4

Preview of page 4
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
wave
· Let the wave…

Page 5

Preview of page 5
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…

Page 6

Preview of page 6
Physics P1a


Reflection

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
Uses
· Radio wave transmitters in airports allow air traffic control to track
aircraft by reflecting radio waves.
· Ultrasound is…

Page 7

Preview of page 7
Physics P1a

Refraction

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
direction.




Investigating Refraction




angle of
angle of refraction
incidence




7

Page 8

Preview of page 8
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…

Page 9

Preview of page 9
Physics P1a




9

Page 10

Preview of page 10
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 ­…

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »