Chapter 25 Beyond Our Solar System Test

The mass of a star can be determined by studying

• the wavelength of light emitted by the star.

• the color of the star.

• the distance between the star and Earth.

• binary star systems.

Which of the following is true about using parallax to measure distance to stars?

• The closer the star, the smaller is the parallax angle.

• The closer the star, the larger is the parallax angle.

• The larger the star, the smaller is the parallax angle.

• The larger the star, the larger is the parallax angle.

Which of the following is NOT a factor that affects the apparent brightness of a star as seen from Earth?

• how old the star is

• how big the star is

• how hot the star is

• how far away the star is

Star A is farther away from Earth than star B. Both stars have the same absolute magnitude. Which of the following is true about their apparent magnitude?

• Both stars will have the same apparent magnitude.

• Star A will have a greater apparent magnitude.

• Star B will have a greater apparent magnitude.

• The apparent magnitude of either star will not depend on its position.

A Hertzsprung-Russell diagram is used to show the relationship between

• absolute magnitude and apparent magnitude.

• temperature and absolute magnitude.

• parallax and temperature.

• apparent magnitude and parallax.

About 90 percent of the stars on the Hertzsprung-Russell diagram are ________

Before a star is born, the matter that will become the star exists as a

• bright explosive supernova.

• red giant.

• black hole.

• cold, dark nebula.

All stars, regardless of their size, eventually

• turn into a black dwarf.

• produce a supernova explosion.

• run out of fuel and collapse.

• collapse into a white dwarf.

About 60 percent of all known galaxies are classified as

• spiral galaxies.

• elliptical galaxies.

• irregular galaxies.

• galactic clusters.

Scientists know the universe is expanding because of the

• red shift of distant galaxies.

• red shift of the brightest galaxies.

• blue shift of distant galaxies.

• blue shift of the brightest galaxies.

Tags

NGSS.HS-ESS1-2