Chapter 7 Quiz Part 2. Flashcards
How are Emissions produced?
Emissions can be produced by inserting chemical salts into a flame giving off a characteristic color.
How can Absoroptions be produced?
Absorptions can be produced by inserting a cool gas (liquid or solid) into the path of the continuous (hotter) light source.
What are Absorption Lines?
Absorption lines are dark lines that are formed within a continuous spectrum when Absorption of energy takes place.
What are emission lines?
Emission lines are the brighter lines that are seen when the emission of energy takes place.
Each atom (or ion) is unique in some way. How are they unique?
Each atom (or ion) has unique orbits for its electrons, therefore each atom or ion has unique special features like emission or absorption lines.
What can be used to determine how fast an object is moving towards or away from an observer?
Radial Velocity.
What is Radial Velocity
Radial velocity is the motion along the line of sight measured by the doppler effect.
Astronomers look for the shift in ___ to judge the general speed of celestial bodies.
Absorption or emission lines.
On a spectra scale, The ___ side is the side that is on the far side.
Red
On a spectra scale, the ___ side is the side that is on the closer side.
Blue
A ___ shift is one that moves towards the far side.
Red
A ___ shift is one that moves towards the closer side.
Blue
Energy is tied with ___ and both move in the same direction.
Frequency
As an object moves toward or away from us, the wavelengths are shifted. When an object moves towards an observer, the wavelength becomes ___ and there is a ___ shift.
Shorter; Blue
As an object moves toward or away from us, the wavelengths are shifted. When an object moves away from an observer, the wavelength becomes ___ and there is a ___ shift.
longer; Red
