TEAM QUIZ- Lab: Fingerprinting the Stars

By studying the spectra of stars, scientists were able to see redshifting, indicating the universe is ____________

• shrinking

• expanding

• not moving

• static

The positions of the bright and dark lines in the spectra shift when the source of energy moves towards or away from the observer. This is called the ___________

• Spectrum Effect

• Doppler Effect

• Red Effect

• Blue Effect

Which elements are present in the mixture?

• D and E

• D and G

• E and G

• only D

• only G

What do spectral lines tell us?

• a star's composition

• a star's location

• a star's brightness

• a star's age

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Helium

Line emission spectra is produced from atoms when

• electrons release energy as they move to their excited state.

• electrons absorb energy as they move to their excited state.

• electrons release energy as they return to the ground state.

• electrons absorb energy as they return to the ground state.