Absorption Spectra

Spectroscopy can also be used to study

• galaxies.

• the surface of Mercury.

• stellar composition.

• UFO's.

Tags

NGSS.HS-ESS1-2

When electrons of an element reach an "excited" state, ___ lines are produced.

• dark

• emission (bright)

• continuous

• invisible

Tags

NGSS.HS-PS1-2

NGSS.HS-PS4-3

A spectroscope may be connected to a ___ to record an object's spectra.

• telescope

• CCD (charged coupled device)

• spectrometer

• spectrograph

Tags

NGSS.HS-ESS1-2

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star (top row) to what the star would look like if it were not moving at all relative to Earth (bottom row).

• It is not moving

• It is moving away from Earth (Redshift)

• It is moving towards Earth (Blueshift)

• It is moving towards Earth (Redshift)

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Based on the observed spectrum as compared to the laboratory source, how is the galaxy moving?

• Away

• Towards

• Stationary

Tags

NGSS.HS-ESS1-2

The absorption lines in the spectrum for Galaxy A are _____ when compared to the lines for the Milky Way.

• red-shifted

• blue-shifted

Tags

NGSS.HS-ESS1-2

Which element(s) is/are found in the star's spectra below?

• Hydrogen only

• Hydrogen & Helium

• Calcium only

• Hydrogen & Calcium

What is an absorption spectrum?

• A spectrum of light emitted by a substance

• A spectrum of light absorbed by a substance

• A spectrum of light reflected by a substance

• A spectrum of light transmitted through a substance

Tags

NGSS.HS-PS4-4

Which of the following best describes the appearance of an absorption spectrum?

• Continuous spectrum with dark lines

• Bright lines on a dark background

• Continuous spectrum with bright lines

• Dark lines on a bright background

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

In which of the following fields is absorption spectroscopy commonly used?

• Astronomy

• Biology

• Geology

• All of the above

Tags

NGSS.HS-ESS1-2