Spectroscopy worksheets
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When sunlight is split by a prism or diffraction grating it appears to emit a ___ spectra.
absorption
dark-line
continuous
bright-line
Upon closer examination, sunlight (and all stars) actually emit ___ spectra.
bright-line (or emission)
absorption (or dark-line)
continuous
multiple
The analysis of the way matter emits and absorbs radiation is called ___.
astronomy
chemistry
spectroscopy
atomic theory
Spectroscopy can be used to study
the atmosphere of Mars.
the age of stars.
spectroscopes.
the Moon.
Spectroscopy can also be used to study
galaxies.
the surface of Mercury.
stellar composition.
UFO's.
___ or "bright-line" spectra can be used to study the elemental composition of stars.
Absorption
Dark
Continuous
Continuous
When electrons of an element reach an "excited" state, ___ lines are produced.
dark
emission (bright)
continuous
invisible
A ___ is used in astronomy to break down light like a prism.
telescope
spectroscope
stethoscope
microscope
Each element on the periodic table can be identified by its
classification as a solid, liquid or gas.
location on the table.
ability to react to form compounds.
unique spectral "fingerprint."
Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.
bright lines
a continuous rainbow
dark lines
white light
The spectroscope is a powerful tool used by astronomers to infer the nature of matter.
True
False
Excited hydrogen gas forms a series of distinct bright spectral lines called absorption lines.
True
False
When an electron changes state it produces a proton.
True
False
By passing starlight light through a ___the light is spread out into its component colors.
spectrograph or spectrometer
telescope
prism or diffraction grating
mirror
After hydrogen is ___ - which is made up of two protons, two neutrons & two electrons.
helium
beryllium
lithium
oxygen
___ produces many emission lines in the red-wavelengths & is used in lights.
Neon
Argon
Hydrogen
helium
A spectroscope may be connected to a ___ to record an object's spectra.
telescope
CCD (charged coupled device)
spectrometer
spectrograph
A ___ can be used in place of a prism in a spectroscope & is inexpensive.
plastic prism
diffraction grating
CCD
lens
If an object like a star is moving away from Earth, the spectral lines are observed to be
smaller or thinner & red-shifted.
smaller or thinner & blue-shifted.
wider or broader & blue-shifted.
wider or broader & red-shifted.
Spectral lines that are observed to be narrower & blue-shifted indicates that an object is
moving away from Earth.
showing transverse motion.
moving towards Earth.
showing radial motion.
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