Exam 4: Spectroscopy: the Inner Workings of Atoms

The particle which adds mass but no charge to the atomic nucleus is the:

All wavelengths of light travel at the same speed in a vacuum, and carry the same energy perphoton.

Why are molecular lines usually found in infrared and radio regions, not as visible lines?

If the magnetic fields are very strong, such as around sunspots, how are spectral lines affectedby the Zeeman effect?

The broadening of spectral lines can be caused by:

The red hydrogen alpha line carries more energy per photon than the blue-green hydrogenbeta line does.

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then:

How many blue photons (frequency of $\left. 6.50 \times 10 ^ { 14 } \mathrm { hz } \right)$ pr second would be required to carry1 Watt (1 Watt = 1 Joule per second)of energy?

________ is the scientific study of the distribution of electromagnetic waves by energy andhow these patterns are created in atoms and molecules.

The energy required to move an electron in a hydrogen atom from energy level 2 to energylevel 3 is:

The colors of a neon light arise because it is a(n)________ spectrum.

To have a negative ion, you must have:

A low density gas must be hot in order to produce an absorption line.

Because the changes in energy levels happen in discrete steps, we refer to these as ________leaps.

Only a hot, thin gas can produce an emission line.

The particles which enter into chemical reactions are the atom's:

Typical stellar spectra appear as:

Why are molecular lines more complex than elemental spectral lines?

The larger the redshift, the faster the distant galaxy is rushing toward us.

Define absorption lines.