Big Bang Evidence Flashcard- Redshift, Spectra, Element Fusion

Front

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

Back

It is moving towards Earth (Blueshift)

Front

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

Back

It is moving away from Earth (Redshift)

Front

The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.

Back

Redshift

Front

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

Back

It is not moving relative to Earth

Front

An object that is moving VERY fast away from Earth would have ________ than an object that is moving very slow away from Earth.

Back

More Redshift

Front

An object that is moving VERY fast towards the Earth would have ________ than an object that is moving very slow towards the Earth.

Back

More Blueshift

Front

When redshift occurs, the perceived WAVELENGTH of the wave would...

Back

Increase

Front

When blueshift occurs, the perceived WAVELENGTH of the wave would...

Back

Decrease

Front

Light emitted from a star or galaxy can be separated into a band of colors, called a ________.

Back

Spectrum

Front

If a star is being observed from Earth and its light has shifted towards the blue side of the electromagnetic spectrum it would be...

Back

Moving towards the Earth