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LensesRays and Diagrams
EyesWave Types
Reflection Refraction
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Light SoundResonance/ Interference
Doppler Effect
RandomParts of Waves
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Final Jeopardy
Physics as a Science
Final Jeopardy•the foundation of biology is chemistry and the foundation of chemistry is physics.•it is about the nature of basic things like forces, energy, and motion.•the ideas of physics extend into more complex sciences.•you can better understand science in general if you understand physics.
Why is physics the most basic science
$200
A lens where light entering parallel focuses on a single point
What is a converging lens?
$400
Converging Lens
What type of lens is a magnifying glass?
$600
Chromatic aberration
After light passes through a lens, there are tiny bands of color around the edge of the image. What is this called?
$800
When light passes through the edge of a lens
When does spherical aberration occur?
$1000
Different colors of light travel at different speeds through glass
Why does chromatic aberration occur?
$200
To determine the image produce from an object
Why do we use ray diagrams?
$400
Through the focal point
When drawing a ray diagram, how does a ray that enters the
lens parallel exit?
$600
Parallel to the principle axis
How does a ray exit a lens if it enters the lens through
the focal point?
$800
It continues unrefracted
How does a ray exit a lens if it enters the lens at the
center?
$1000
The top of the object
Where are the three rays drawn from for a ray
diagram?
$200
A camera
Which instrument is a human eye most similar to?
$400
Upside down
What is the orientation of the image your eye
receives?
$600
The iris gets larger
On a bright day, how does the iris of your eye change?
$800
The retina
Where does light focus on your eye after passing
through the lens?
$1000
Yellow-Green
Our eyes are most sensitive to which color of light?
$200
False
True or False. Electromagnetic waves need a medium to travel through.
$400
Longitudinal
What type of wave is a sound wave?
$600
Transverse wave, Electromagnetic wave
What type of wave is an x-ray?
$800
A wave whose disturbances are perpendicular to the direction of
propagation
What is a transverse wave?
$1000
A wave that has disturbances along the direction of propagation
What is a longitudinal wave?
$200
4 m
How far is the image from a plane mirror if the object is
4 m away?
$400
Upright, same height as object, same distance from the mirror as the object
Describe a virtual image that occurs in a plane mirror.
$600
When the reflecting surface has irregularities that are large compared to the
wavelength of light
When does diffuse reflection occur?
$800
Half the Persons height
What size is the shortest plane mirror that can be used to view yourself?
$1000
The angle of incidence equals the angle of refraction
State the law of reflection.
$200
When cool air is above hot air, on a hot day, when hot air is close to the ground
When does a mirage occur?
$400
Bends towards the normal
When going from air to water, how does a light ray
bend?
$600
Bends away from the normal
When a ray of light speeds up, how does the light ray
bend?
$800
Bending of light
What causes refraction?
$1000
When light bends
When does refraction occur?
$400
Light is faster in air than in water
How does the speed of light in air and the speed of light in
water compare?
$800
The speed of light is much faster
How does the speed of light and the speed of sound
compare?
$1200
8 min
How long does it take for light from the sun to reach
us?
$1600
Opaque
What type of material does light not pass through?
$2000
3 x 10 ^8 m/s
What is the speed of light?
$400
Vibrations
What produces sound waves?
$800
Longitudinal
What type of wave is sound?
$1200
In a vacuum
Where can sound not travel?
$1600
10000000 Times as loud
Compared to a sound of 10 dB, the intensity of a 70 dB sound is how many times
larger?
$2000
Longitudinal waves, periodic, periods of compressions and rarefactions, high and
low pressure regions
Describe a sound wave in air.
$400
By breaking a wine glass
How can a singer demonstrate resonance?
$800
Resonance
What caused the Tacoma narrows Bridge to collapse?
$1200
Almost Nothing
If you stand directly half way between two TVs on the same channel, what
would you hear?
$1600
Interference
When two or more waves are at the same place at the
same time, what is the result called?
$2000
A Node
Where can you touch a standing wave without disturbing the wave?
$400
A moving source or a moving observer
What causes the Doppler Effect?
$800
Supersonic
If a plane moves faster than the speed of sound, what is
the speed of the plane said to be?
$1200
When the source moves
When does the Doppler Effect occur if the observer is
stationary?
$1600
A Sonic Boom
What is swept continuously behind a plane flying faster
than the speed of sound.
$2000
It remains the same
When a source of sound moves towards you, what
happens to the speed of the wave?
$400
Interference
What causes beats?
$800
Period
What is the time required to complete one wave cycle
called?
$1200
When two tuning forks have nearly the same frequency and are sounded together
When do we hear beats?
$1600
Hz
What unit describes frequency?
$2000
6 Hz
If one wave has a frequency of 132 Hz and another is
sounded with a frequency of 126 Hz, what is the frequency
of the resulting beats?
$400
It is halved
If you double the frequency of a wave, what happens to
the period?
$800
Decreases
If you increase the frequency of a wave, what happens to
the wavelength?
$1200
Wavelength divided by the Period or wavelength times frequency
How do you determine the speed of a wave?
$1600
1/30 Hz
If a wave has a period of 30 s, what is the frequency?
$2000
Two times the original amplitude
If two waves of equal amplitude arrive at the same
place exactly in step with each other, what is the resulting amplitude?
Daily Double
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Daily Double
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question
Daily Double
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The Jeopardy champion!
