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Physics final (Hobbs)

Terms in this set (48)

Daffodils flower petals are yellow because the petal ___ the wavelength for yellow and ____ all the other visible wavelengths
Reflects, absorbs
Closes light spectra outside the visible wavelengths are
Ultravert and infrared
Microwaves are at a higher freq. than ___waves, but a lower freq. than ___ waves
Radio and light
Dangerous light waves are
Ultraviolet, gamma rays, and X-ray
The sky is blue because of atoms and molecules in the atmosphere creating
Selective scattering
Translucent
Objects that allow light to pass through but create scatter patterns
Reflection is when light is
Returned
Refraction is when light
Bends
Seeing the sunset is an example of
Refraction
Seeing the light in the bathroom from your bedroom when their is no direct path for the light to travel is
Diffraction
Seven visible wavelengths of colors in order
Red, orange, yellow, green, blue, indigo, and violet
Light moves through glass by
Absorption and remission
Earths atmosphere is opaque to which type of light wave
High-frequency ultraviolet
What's the process by which the light moves into, through, and out of the raindrop
Refraction, reflection, and refraction
When there is constructive interference, the amplitude of a wave
Increases
When there is destructive interference the amplitude of a wave
Decreases
Light waves are
Transverse
Sound waves are
Longitudinal
Placing your hand next to an open flame is
Radiation
Having a heater warm up a room through moving hot air is
Convection
Putting your hand in the fire is
Conduction
Cooling a pie coming from the oven should be put in the
Freezer
Heat moves from from the ___ object to the ___ object
Hot, cold
Thermal entropy is always
Increasing
Molecular vibration stops
Absolute zero
Kelvin is to
Add 273
Celsius is to
Subtract 273
m
Distance
s
Time/ period
m/s
Speed/ velocity
m/s squared
acceleration
N
Force
Hz
Frequency
cal or J
Energy
kilograms (kg)
Mass
Gamma
Needs one inch of lead
Alpha
Needs one sheet of paper
dividing an unstable nucleus in two and releasing energy
Fission
Only county to use nuclear weapons in war
US
Merging two or more smaller nuclei to a larger nucleus and releasing energy
Fusion
Only country to be attacked by nuclear weapons in war
Japan
For celestial object gravity is strongest
On the surface
Higher a football players Center of mass the ___ it is to tackle him
Easier
Accelerating up in an elevator and you are standing on a scale. The scale is showing ur weight
Increase
Constant velocity up in a elevator and ur standing on a scale. Ur weight is
Constant
For a satellite to keep orbit, it tangential speed must equal its
Centripetal force
Move outward from the center of a rotating object. What increases? What stays the same?
Tangential speed, rotational motion
N/m
Torque
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