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alanna petrou
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Cards (23)
What do waves transfer in the direction they are traveling?
Energy
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How do particles in a medium behave when a wave travels through it?
They
oscillate
but stay in the same place
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What happens when you drop a twig into a calm pool of water?
Ripples
form on the water's surface
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What are the two types of waves discussed?
Transverse Waves
Longitudinal Waves
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What type of vibrations do longitudinal waves have?
Parallel
vibrations
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How can you measure wave speed?
Using the formula v =
fλ
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What is the relationship between
wave
speed
,
frequency
, and
wavelength
?
v = fλ
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What should you fix when investigating waves with a signal generator?
The
frequency
on the signal generator
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What happens to a wave when it hits a boundary at an angle?
It undergoes
refraction
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How can you visualize refraction using a ray diagram?
By drawing the boundary and
incident ray
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What is the process of refraction at a boundary?
Draw the boundary and normal line
Draw the
incident
ray and measure angle of incidence
Draw the refracted ray based on material density
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What happens to the angle of refraction if the second material is denser?
It bends towards the
normal
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What is a wave front?
A line showing
points
on a wave
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What occurs when a wave crosses a boundary at an angle?
Part of the
wave front
crosses first
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Why does a wave bend when crossing a boundary?
Due to differences in
speed
across the wave
front
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What is the continuous spectrum of electromagnetic waves?
Radio Waves
Microwaves
Infrared
Visible Light
Ultraviolet
X-rays
Gamma Rays
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How are radio waves produced?
By
oscillating charges
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What are some uses of electromagnetic waves?
Communication (
radio waves
)
Cooking (
microwaves
)
Temperature monitoring (infrared)
Medical imaging (
X-rays
)
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What is a Leslie Cube used for?
Investigating emission of
infrared
radiation
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What should you do before measuring temperature with a Leslie Cube?
Wait
for
the
cube
to
warm
up
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What should you ensure when using an infrared detector with a Leslie Cube?
Position
it at the
same
distance
each time
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What is the risk associated with infrared radiation?
It can cause
burns
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What precautions should be taken during experiments with boiling water?
Be careful when pouring
Allow
equipment
to cool before handling
Avoid moving hot equipment
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