36 CFU 3/8

What is an emission spectrum?

• A continuous range of colors without any gaps

• A series of bright lines at specific wavelengths produced by atoms

• A dark band in the middle of a rainbow

• The total amount of light emitted by a star

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

How do scientists determine what stars are made of?

• By measuring their temperature

• By analyzing the light they emit and studying their spectra

• By observing their size

• By counting the number of stars in the sky

Tags

NGSS.HS-ESS1-2

What is the main difference between an absorption spectrum and an emission spectrum?

• Absorption spectra have bright lines, emission spectra have dark lines

• Absorption spectra have dark lines, emission spectra have bright lines

• Both have only dark lines

• Both have only bright lines

Tags

NGSS.HS-PS4-4

Which element's emission and absorption spectra are commonly studied in astronomy?

• Oxygen

• Hydrogen

• Carbon

• Nitrogen

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

What causes the bright lines in an emission spectrum?

• Electrons absorbing energy and moving to higher energy levels

• Electrons releasing energy and falling to lower energy levels

• Atoms reflecting light

• Atoms splitting apart

Tags

NGSS.HS-PS4-3

What do the dark lines in an absorption spectrum represent?

• Wavelengths of light that are emitted by atoms

• Wavelengths of light that are absorbed by atoms

• Wavelengths of light that are reflected by atoms

• Wavelengths of light that are not present in the universe

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Which of the following best describes the emission spectrum of hydrogen?

• A continuous spectrum with no lines

• A series of bright lines at specific wavelengths

• A single dark line

• A rainbow with all colors equally bright

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Why do different elements have different emission spectra?

• Because they have different numbers of protons

• Because their electrons occupy different energy levels

• Because they are different colors

• Because they are found in different places

Tags

NGSS.HS-PS1-1

What is the main use of studying the emission and absorption spectra of stars?

• To determine their distance from Earth

• To find out what elements they contain

• To measure their size

• To calculate their speed

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

Which of the following is true about the emission spectrum of helium?

• It is identical to the emission spectrum of hydrogen

• It has its own unique set of bright lines

• It has no bright lines

• It is a continuous spectrum

Tags

NGSS.HS-ESS1-2