Stars and Galaxies Chapter 20 Post-Test Review

What significance does constellations have for modern astronomers?

• These objects help divide the sky into regions to be studied.
• These have no significance to modern astronomers.
• These occurred only in the ancient sky above China.
• They identify which stars are the brightest.

The North Star, ___________, is positioned almost directly over the North Pole.

• Betelgeuse
• Orion
• Sirius
• Polaris

Another way to define "nebula" is a(n)__________.

• young star
• old star
• dying star
• exploding star

Tags

NGSS.HS-ESS1-3

Once stars run out of hydrogen and the temperature begins to increase, these stars are said to be __________.

• a white dwarf
• a giant
• a galaxy
• a supernova

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

Which wavelength from the figure has the highest energy?

• microwave
• infrared
• gamma
• ultraviolet

Tags

NGSS.HS-PS4-3

Which best describes the temperature of our Sun?

• hot
• cool
• medium
• low

The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?

• the Milky Way
• the universe
• It doesn't orbit.
• the solar system

Which of these is not found in a planetary nebula?

• hydrogen
• planets
• energy
• helium

Tags

NGSS.HS-ESS1-3

Which statement best describes the figure?

• This constellation no longer exists.
• This constellation helps tell old stories.
• This is a nebular cluster.
• This constellation is one of many used to divide the sky in to regions for astronomers.

The figure shows the Doppler Effect when the source is moving. How does this relate to light from stars?

• Because the universe is expanding light from galaxies shifts toward the red end of the spectrum.
• Star light has no relationship to the Doppler Effect shown in the figure.
• Because the universe is collapsing toward Earth, light from stars shifts toward the red end of the spectrum.
• Because the universe is expanding light waves are compressed and seem brighter from more distant galaxies.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1