Shared Flashcard Set

Details

artonomy ch 3 quiz
n/a
31
Astronomy
12th Grade
10/07/2010

Additional Astronomy Flashcards

 


 

Cards

Term
radiation
Definition
the transmission of energy through space without physical connection (light)
Term
electromagnetic
Definition
the transmission of energy through electromagnetic fields
Term
visible light
Definition
particular type of electromagnetic radiation which our human eye can detect
Term
wave period
Definition
time it takes to go between 2 crests
Term
wavelength
Definition
distance between two crests or troughs
Term
amplitude
Definition
max departure of wave from undisturbed state
Term
frequency
Definition
# of wave crests that pass a point (a point per second)
Term
range of visible spectrum
Definition
700 nm - 400 nm
Term
diffraction
Definition
deflection or bending of a wave as it passes a corner or moves through a narrow gap
Term
interference
Definition
ability of 2 or more waves to reinforce or cancel each other
Term
constructive interference
Definition
two waves exactly cancel, no set motion remains
Term
destructive interference
Definition
interference between waves of visible light is not noticeable in every day experience but easily measure in lab
Term
longest wavelength, lowest frequency
Definition
radio and microwave
Term
next longest wavelength and low frequency(detects heat)
Definition
infrared
Term
after visible light
Definition
UV
Term
after UV, dangerous form of radiation
Definition
x rays
Term
most dangerous form of radiation
Definition
gamma rays!
Term
all the colors of the visible light spectrum
Definition
ROYGBIV
Term
lowest to highest frequency
Definition
radio, microwave, infrared, visible, Uv, xray, gamma
Term
opacity
Definition
radiation is blocked
Term
ionosphere
Definition
electrically conducting layer at 100 KM above earth
Term
temperature
Definition
direct measure of the amount of movement of particles
Term
intensity
Definition
amount of strength of radiation
Term
black body spectrum
Definition
shows radiation emitted depending on temperature
Term
wiens law
Definition
peak wavelength is inversly proportional to the temperature of its star
Term
stefans law
Definition
total energy emitted is proportional to the temperature to the 4th power
Term
doppler effect
Definition
moving object toward a source of radiation.. the wavelengths seem shorter but moving away they seem longer
Term
radial motion
Definition
line of sight
Term
transverse motion
Definition
perpendicular to the line of sight
Term
blue shift
Definition
higher frequency, shorter wavelengths
Term
redshited
Definition
longer wave lengths, lower frequency
Supporting users have an ad free experience!