Worksheets1 - Spectroscopy and Stars
Total questions: 15
Worksheet time: 14mins
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.
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 signature.
Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.
bright lines
a continuous rainbow
dark lines
white light
What do spectroscopes do?
Collect light to identify elements
Refract light
Absorb light
Transmit light
Why are line emission spectra of elements called "atomic signatures"?
Which elements are in the mixture?
A only
D only
Z only
A and D
D and Z
When we compare the star spectrum with the gas spectrum in this picture what does it tell us
the Sun has Helium
the Sun only has Helium
Helium is made from the fusion process
Sun does not have Helium
Which element(s) are found in the star's spectra below?
Hydrogen only
Hydrogen & Helium
Calcium only
Hydrogen & Calcium
