Astronomy Unit 2 Review

We will see the light from an object that is moving away from us to be

• longer wavelength

• shorter wavelength

• unchanged

• dimmer

This images shows ____ spectrum

• a continuous

• an emission

• an apsorption

• a blackbody

This images shows ____ spectrum

• a continuous

• an emission

• an apsorption

• a blackbody

This images shows ____ spectrum

• a continuous

• an emission

• an apsorption

• a blackbody

This images shows ____ spectrum

• a continuous

• an emission

• an apsorption

• a blackbody

This type of spectrum comes from

• a hot, dense source

• a hot, low-density source

• light passing through a cool, low-density gas

This type of spectrum comes from

• a hot, dense source

• a hot, low-density source

• light passing through a cool, low-density gas

This type of spectrum comes from

• a hot, dense source

• a hot, low-density source

• light passing through a cool, low-density gas

In the model of the atom which we use to understand spectra, electrons

• only make transitions between orbitals of specific energies.

• are not confined to specific orbits.

• can be halfway between orbits.

• move from orbit to orbit in many small steps.

According to the Zeeman effect, the splitting of a spectrum's lines is due to

• high temperature

• high velocity

• the presence of a magnetic field

• the atoms being ionized