AST 220 – Introduction to Astronomy – Test 2 Questions and Answers
which wave is the easiest to collect with interferometry radiowaves
Interferometry process that links separate telescopes so they act as one telescope,
producing more detailed images as the distance between them increases.
emitted light light that is spontaneously given off
absorbed light light captured by matter
transmitted light light that passes through the object
reflected or scattered light when radiant energy (such as light) is "bounced off" an object,
such as a solid colored surface
photon a single particle of light
wavelength the distance from the peak of one light or sound wave to the peak of the next.
electromagnetic wavelengths vary from the short blips of cosmic rays to the long pulses of radio
transmission
frequency the number of complete wavelengths that pass a point in a given time
gamma rays host energy photons
x-rays second most energetic photons, the second host frequency
, ultraviolet light third host frequency, just above the visible spectrum of the eye
visible light runs from violet down to red
infrared waves below the visible spectrum, usually associated with heat
radio waves very long electromagnetic waves
emmission line spectrum frequencies of electromagnetic radiation emitted due to electrons
making a transition from a high energy state to a lower energy stat
continuous spectrum the emission of a continuous range of frequencies of electromagnetic
radiation, usually produced by stars or light
thermal radiation determined by the temperature
what kind of energy is light? radiative, it exists as electromagnetic waves and can act as a
particle in a wave
the higher the frequency? the smaller the wavelength
the lower the frequency? the longer the wavelength
which frequency has more energy? a higher one
which wave is the easiest to collect with interferometry radiowaves
Interferometry process that links separate telescopes so they act as one telescope,
producing more detailed images as the distance between them increases.
emitted light light that is spontaneously given off
absorbed light light captured by matter
transmitted light light that passes through the object
reflected or scattered light when radiant energy (such as light) is "bounced off" an object,
such as a solid colored surface
photon a single particle of light
wavelength the distance from the peak of one light or sound wave to the peak of the next.
electromagnetic wavelengths vary from the short blips of cosmic rays to the long pulses of radio
transmission
frequency the number of complete wavelengths that pass a point in a given time
gamma rays host energy photons
x-rays second most energetic photons, the second host frequency
, ultraviolet light third host frequency, just above the visible spectrum of the eye
visible light runs from violet down to red
infrared waves below the visible spectrum, usually associated with heat
radio waves very long electromagnetic waves
emmission line spectrum frequencies of electromagnetic radiation emitted due to electrons
making a transition from a high energy state to a lower energy stat
continuous spectrum the emission of a continuous range of frequencies of electromagnetic
radiation, usually produced by stars or light
thermal radiation determined by the temperature
what kind of energy is light? radiative, it exists as electromagnetic waves and can act as a
particle in a wave
the higher the frequency? the smaller the wavelength
the lower the frequency? the longer the wavelength
which frequency has more energy? a higher one
