Energy/Momentum
What quantity is equal to the mass of an object times its velocity?
Momentum
The distance from one low point on the wave to the next low point.
Wavelength
Pitch, or the musical tone of a sound, is our body's way of communicating to us what trait of the sound wave?
Frequency, or wavelength.
The ROYGBIV rainbow is a small part of the full collection of light frequencies that exist in our universe, referred to collectively as the ____________________.
Electromagnetic spectrum
A pencil sticking out of a glass of water appears to be split in two pieces, one in the water and one in the air, because of which phenomenon?
Refraction
Gravitational Potential
If a tree branch waves back and forth every ten seconds, what is its frequency?
f = 1/t
f = 1/10 = 0.1 Hz
The loudness of a sound is the brain's way of communicating which trait of a sound wave to us?
Amplitude
Newton found that sunlight traveling through a prism separates into a pattern based on frequency, which he realized was due to which wave behavior:
Refraction
The angles of incidence and reflection.
The change in an object's energy is equal to the force on it times the distance it travels, according to the ______ - Energy Theorem.
Work
When two waves overlap each other, they can grow in intensity, or diminish, in a process called:
Interference
Sound waves trapped inside of a pipe or string will vibrate in some places and not vibrate in others. The places where the wave vibrates are called ________ and the places where the don't vibrate are called ________.
True or false: We wear sunscreen to protect us from gamma rays emitted by the sun.
False: The atmosphere absorbs gamma radiation from space, and the sun doesn't even emit that much of it. Sunscreen protects us from the sun's UV emissions.
This shape of lens can make light waves focus to a single point.
Convex
Which kind of collision conserves both kinetic energy and momentum?
Perfectly Elastic Collisions
Sound waves and light waves behave in many similar ways, but they differ in that sound is a _________ wave and light is a _________ wave, which are opposites of each other.
Longitudinal and Transverse
A young boy breaking a glass with his voice is not a demonstration of vocal power, but a demonstration of the power of ____________.
Resonance
Thin layers of transparent material stacked on top of each other can start to take on bright colors in a process known as _________ __________ __________.
Thin Film Interference
A certain converging lens has a focal distance of 20 cm, and and object is placed in front of it at a distance of 10 cm away.
Is the object bigger/smaller, upside down/right side up, and real/virtual?
Math Problem: A certain rocket engine can produce 25N of thrust for 5 seconds. It is attached to a rocket of total mass 20 kg. Ignoring gravity, how fast will this rocket be going at the end of those 5 seconds?
6.25 m/s
F*T=Delta mv
25*5=20*v
6.25=v
This is the only type of wave that doesn't need a physical medium to travel through.
Electromagnetic waves, or light.
A siren that normally emits an 800 Hz sound wave now sounds like a 600 Hz sound wave. Without looking at the firetruck, can you tell if it is coming towards you or away from you?
Away
Light that reflects off of a shiny (non-metallic) surface will vibrate in the direction of that surface, which means that the light can now be said to be:
Polarized
You may use the equations provided or a complete lens diagram to answer the question:A lens with focal distance of 4 cm sits at a distance of 12 cm from a 3 cm tall arrow. Where does the image of the arrow appear to be, and how tall is it?
Equations:
Lensmaker's Equation:
1/d_o +1/d_i = 1/f
Magnification Equation:
M = -d_i/d_o
h_i = M*h_o
Image Distance:
d_i = 6 cm
Image Height:
h_i = -6/12 * 3 = -1.5 cm