Exam 6: Atoms and Spectra

____ has a negative charge and a mass about 2000 times smaller than a proton.

A zero Kelvin temperature is also known as ________________________.

Since an electron is so less massive than a proton, what is the approximate mass and charge of a neutral hydrogen atom

in the following model of an atom, draw a transition from the ground state to the first excited state. To draw this, draw the electron's motion as a line with an arrow to indicate direction and draw the photon as a wave with an arrow to indicated direction. Label the electron and photon. Label whether this is an absorption, emission, or continuous spectrum.

What is the order of star colors with increasing temperature

__________________ is the agitation among the molecules and/or atoms of a body.

-Which series is shown above

Figure 6-1 -A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars is the hottest

Suppose the laboratory wavelength of a spectral line is 600 nm. In a star it is measured to be 599.4 nm. Is the star moving toward or away from us, relative to the line of sight How fast is it moving (Hint: c = 300,000 km/s)

Which spectrum is shown above

You would like to know if a star is coming towards you or away from you. Therefore, you will need to obtain the star's _______________ from its shifted spectra.

-Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an absorption spectrum

You would like to find the surface temperature of a star so you will need the star's _____________________ spectrum and use _____________ to find the temperature. Knowing the temperature, you can use _________________ to find the total energy the star radiates at its surface.

Absolute zero is

A hotter star is brighter than a cooler star of the same size. Assume both are typical stars.

Blue stars are hotter than red stars.

You would like to know the chemical composition of a star's atmosphere. Therefore you will need to obtain the star's ______________ spectra.

To know the element name on the periodic table, you need to know the number of neutrons in the nucleus.

The Sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the Sun occur

An atom is ionized if one of its electrons jumps to a higher energy level in the atom.