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In transverse waves, the oscillations are perpendicular to the direction of energy transfer.

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match the key terms to their definitions

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frequency
period
amplitude
wavelength

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the distance between the same point on two adjacent waves
the maximum displacement of a point on the wave from its undisturbed position
the amount of time it takes for a full cycle of the wave to pass a point
the number of complete waves passing a certain point per second

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if the frequency of a wave is 20 Hz, what is the period?

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if the frequency of a wave is 20 Hz and the wave length is 2 m work out the wave speed.

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what type of refection is this?

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what type of reflection is this?

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fill in the blanks

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if a wave crosses a boundary into a material of higher optical density, the speed of the wave will ___1___and bend ___2___ the normal

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if a wave crosses a boundary into a material of lower optical density, the speed of the wave will ___1___and bend ___2___ the normal

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how can you get clearer results from a light experiment?

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how should you investigate refraction?

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put a transparent rectangular block on a piece of paper and trace around it
draw the normal at the point the light entered the block
trace the incident ray and mark where the light emerges on the other side of the block
join up the incident ray with the emerging point to show the path of the refracted ray through the block
repeat with different materials
use a ray box or laser to shine a ray of light at the middle of one side of the block
measure the angle of incidence and the angle of refraction

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how to investigate reflection

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measure the angles of incidence and reflection, also taking note of the width and brightness of the reflected ray
draw a straight line across a piece of paper, and line up a mirror with this line
repeat with a different object (not a mirror)
draw the normal at the point of incidence
shine a ray of light at the mirrors surface and trace the incoming and reflected light beams

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