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- 1. Multiple Choice
When sunlight is split by a prism or diffraction grating it appears to emit a ___ spectra.
absorption
dark-line
continuous
bright-line
- 2. Multiple Choice
Upon closer examination, sunlight (and all stars) actually emit ___ spectra.
bright-line (or emission)
absorption (or dark-line)
continuous
multiple
- 3. Multiple Choice
The analysis of the way matter emits and absorbs radiation is called ___.
astronomy
chemistry
spectroscopy
atomic theory
- 4. Multiple Choice
Spectroscopy can be used to study
the atmosphere of Mars.
the age of stars.
spectroscopes.
the Moon.
- 5. Multiple Choice
Spectroscopy can also be used to study
galaxies.
the surface of Mercury.
stellar composition.
UFO's.
- 6. Multiple Choice
___ or "bright-line" spectra can be used to study the elemental composition of stars.
Absorption
Dark
Continuous
Continuous
- 7. Multiple Choice
When electrons of an element reach an "excited" state, ___ lines are produced.
dark
emission (bright)
continuous
invisible
- 8. Multiple Choice
A ___ is used in astronomy to break down light like a prism.
telescope
spectroscope
stethoscope
microscope
- 9. Multiple Choice
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."
- 10. Multiple Choice
Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.
bright lines
a continuous rainbow
dark lines
white light
- 11. Multiple Choice
The spectroscope is a powerful tool used by astronomers to infer the nature of matter.
True
False
- 12. Multiple Choice
Excited hydrogen gas forms a series of distinct bright spectral lines called absorption lines.
True
False
- 13. Multiple Choice
When an electron changes state it produces a proton.
True
False
- 14. Multiple Choice
By passing starlight light through a ___the light is spread out into its component colors.
spectrograph or spectrometer
telescope
prism or diffraction grating
mirror
- 15. Multiple Choice
After hydrogen is ___ - which is made up of two protons, two neutrons & two electrons.
helium
beryllium
lithium
oxygen
- 16. Multiple Choice
___ produces many emission lines in the red-wavelengths & is used in lights.
Neon
Argon
Hydrogen
helium
- 17. Multiple Choice
A spectroscope may be connected to a ___ to record an object's spectra.
telescope
CCD (charged coupled device)
spectrometer
spectrograph
- 18. Multiple Choice
A ___ can be used in place of a prism in a spectroscope & is inexpensive.
plastic prism
diffraction grating
CCD
lens
- 19. Multiple Choice
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.
- 20. Multiple Choice
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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