# Light and Sound GCSE Physics AQA (higher)

I have made this quiz on practically every single sentence in the AQA Physics GCSE revision guide.

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What is the incident ray?
the one going towards the mirror
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What is the reflected ray?
The one going away from the mirror
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what is the normal ray?
the one at a right angle to the mirror
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Where is the angle of incidence?
between the incident ray and the normal ray
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Where is the angle of reflection?
between the reflected ray and the normal ray
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the angle of incidence =
the angle of reflection
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Why do we see objects?
because the light reflects off the object and bounces into our eyes
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What happens when light reflects off an even surface?
The light bounces off at the same angle
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What is this called?
A regular reflection
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What happens when light hits an uneven surface?
The light bounces off at different angles
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What is this called?
a diffuse reflection
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The image in a plane mirror is....
The same size
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The image in a plane mirror is.....
Upright
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The image in a plane mirror is......
The same distance behind the mirror as in front.
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The image in a plane mirror is.....
Virtual.
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What is a "real" image?
Something that can be formed on a screen
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What is a "virtual" image?
Something that cannot be formed on a screen
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What is a "fake" image?
Nothing to do with mirrors
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What means that one of these can be formed on a screen?
because the rays of light that produce the image pass through it
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Light rays from the same point on a very distant object........when they reach the mirror
are parallel
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What is the distance from the mirror to the principle focus called?
the focal length
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magnification =
image height/object height
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When an object is placed between the principle focus and a concave mirror a..................
virtual image is produced
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When an object is placed between the principle focus and a concave mirror an..................
upright image is produced
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When an object is placed between the principle focus and a concave mirror the image is..................
behind the mirror
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When an object is placed between the principle focus and a concave mirror, the image is.................
larger than the object
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A convex mirror always produces a.......image.
virtual
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A convex mirror always produces an.........image.
upright
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a convex mirror always produces a............image.
diminished
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A convex mirror always produces an image that is........the mirror.
behind
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convex mirrors are used.......
as rear-view mirrors in cars
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What is refraction?
When a light ray changes direction after crossing a boundary between two substances
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What happens when light enters a denser substance?
It slows down
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What else happens?
It bends towards the normal
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What happens when light enters a less dense substance?
It speeds up
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What else happens?
It bends away from the normal
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Different colours of light have.......wavelengths.
different
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What is it called when a ray of white light is shone onto triangular glass?
dispersion
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What is refracted the most?
violet
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What is refracted the least?
red
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What image is formed by a converging lens if the object is further away than the principle focus?
real
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What image is formed by a diverging lens if the object is closer than the principle focus?
virtual
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What image is formed by a converging lens if the object is nearer than the principle focus?
virtual
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What is a converging lens?
One that goes out in the middle like a convex mirror
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What is a diverging lens?
One that goes in in the middle like a concave mirror
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what lens does a camera use?
converging
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What lens does a magnifying glass use?
converging
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A magnifying glass forms a......image
virtual
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A magnifying glass forms a......image
largers
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A magnifying glass forms an image on...........of the lens to/as the object.
the same side
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What is sound caused by?
mechanical vibrations
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What is a longitudinal wave?
a sound wave
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What is a transverse wave?
a light wave
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Sound can travel through
solids and fluids
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Do you like physics?
OH MY GOD WHAT CRAZY WOULD LIKE IT????????
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Do sound waves travel fastest in solids or gasses?
solids
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What is the range of the human ear?
20Hz to 20,000Hz
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What can we use to demonstrate longitudinal and transverse waves?
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Sound waves are reflected to produce.......
echos
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What can absorb sounds?
soft furnishings
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Where does refraction take place?
at the boundaries between layers of air between different temperatures
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the bigger the amplitude of the wave, the more/less energy it carries.
more
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the bigger the amplitude, the louder/quieter the sound.
louder
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The higher the frequency of the sound, the higher/lower the pitch.
higher
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Differences in waveforms can be shown on what?
an oscilliscope
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the quality of a note depends on.......
the waveform
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Why do instruments produce different sounds?
they have different waveforms
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What is a sound wave called when it has a frequency of 40,000Hz?
ultrasound
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What happens when a wave meets a boundary between two different materials?
it is reflected
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Ultrasound is.....
non-ionising
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How do we clean delicate items using ultrasound?
we put the object in a tank of water and pass ultrasound waves through the tank
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How can flaws in metal castings be detected?
with ultrasound....i guess.
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Why is ultrasound used for cleaning a delicate mechanism like a watch?
So it does not have to be dismantled
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## Other cards in this set

### Card 2

#### Front

What is the reflected ray?

#### Back

The one going away from the mirror

### Card 3

#### Front

what is the normal ray?

### Card 4

#### Front

Where is the angle of incidence?

### Card 5

#### Front

Where is the angle of reflection?