Study Guide Ch6

Chapter 6- Atoms and Spectra

Study Guide

Answer is slashed threw its not the right one if in red it might be the answer.

Question 1
The bluer the light, the ____ each photon contains.
more energy

Question 2
The neutral hydrogen atom consists of
one proton and one electron.

Question 3
Which of the following cannot be determined from the spectrum of a star?
tangential (perpendicular to line of sight) velocity

Question 4
Two stars of the same spectral class must have the same
temperature.

Question 5
A(n) ____ contains two or more atoms that are bound together by exchanging or sharing electrons with each other.
molecule

Question 6
An atom can be excited
b and c absorbs emits

Question 7
The lowest energy level in an atom is
the ground state.

Question 9
Atoms that have the same number of protons but a different number of neutrons are called
isotopes.

Question 10
The process of removing an electron from a stable nucleus is known as
ionization.

Question 11
Each element has its own set of characteristic absorption lines because
electron energy levels differ for each element.

Question 12
A neutral atom always contains
the same number of protons as it does electrons.

Question 13
The Doppler effect states that the motion of any object can
shift the wavelength of spectral lines.

Question 14
can emit a photon when the electron moves to a lower energy level.

Question 15
You are standing near a railroad track and a train is moving toward you at 60 mph and blowing its horn. What will you notice as the train moves past you?
As the train approaches, the horn will sound higher in pitch than when the train is moving away.

Question 16
The temperature of an object from which no heat energy can be extracted is
0° K

Question 17
Diagram 6-2
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?
3

Question 18
____ is a set of rules that describes how atoms and subatomic particles behave.
Quantum mechanics

Question 20
The two most abundant elements in the sun are
hydrogen and helium.

Question 2
Absolute zero is
the temperature at which atoms have no remaining energy from which we can extract heat.

Question 5
The ____ of a gas is a measure of the average speed of the particles (atoms or melecules) in the gas.
temperature

Question 9
The energy of a photon is proportional to the light's
two of the above frequency/wavelenght

Question 13
 What is the order of star colors with increasing temperature?
Red, Yellow, Blue

Question 7
Diagram 6-2
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 a continuous spectrum?
1
Question 16
Diagram 6-2
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?
3
Question 19
Diagram 6-2
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 emission spectrum?
2

Question 4
Diagram 6-1
In Diagram 6-1, which of the transitions would absorb a photon with the greatest energy?
Transition 4

Question 12
Diagram 6-1
In Diagram 6-1, which of the transitions would absorb a photon with the smallest energy?
Transition 5

Question 18
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 has the lowest temperature?
Star E

Question 8
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?
Star A

Question
____ has a negative charge and a mass about 1800 times small than a proton.
An electron

Question
If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is
an excited atom.

Question
Which of the following can be determined by using the Doppler Effect?
I. The speed at which a star is moving away from an observer.
II. The transverse velocity of a star.
III. The radial velocity of a star.
IV. The speed at which a car is traveling toward an observer.
I, III, & IV

Question 17
The ____ is responsible for binding the electrons to the nucleus.
Kirchhoff's law
ground state
temperature
Coulomb force
Balmer series

Question
An atom that is excited
can emit a photon when the electron moves to a lower energy level.