Properties of the Stars

The  Hertzsprung-Russell (H-R) Diagram below represents the brightness and temperature of stars visible from Earth. Which of the following correctly the properties of main sequence star, Star B?

• It is brighter and cooler than Star D.

• It is hotter and brighter than Star D.

• It is brighter and has a similar temperature to Star A.

• It has a similar brightness and temperature to Star A.

Tags

NGSS.HS-ESS1-3

Which properties would be  most useful for the classification of a star recently discovered by an astronomer?

• apparent magnitude, temperature, absolute brightness, and size

• temperature, solar flare activity, number of surrounding planets, and size

• temperature, size comparison to our sun, solar flare activity, and absolute brightness

• apparent magnitude, temperature, distance from the Milky Way, and presence of dark spots

The diagram shows a cross-section of the Sun. Four features are labeled W through Z. Which feature is the solar prominence?

• W

• X

• Y

• Z

Tags

NGSS.MS-ESS1-1

Dr. Kuiper is studying the electromagnetic radiation emitted by a star in the Andromeda Galaxy. He has detected three different wavelengths of electromagnetic energy from the star. Which of the following describes what Dr. Kuiper should see when he calculates the frequencies of these waves?

• The wave with the shortest wavelength will have the lowest frequency.

• The wave with the shortest wavelength will have the highest frequency.

• The wave with the longest wavelength will have a frequency that is double its amplitude.

• The wave with the longest wavelength will have a frequency that is one-half its amplitude.

Tags

NGSS.HS-PS4-1

Which of the following best identifies a difference between apparent magnitude and absolute magnitude in stars?

• The absolute magnitude of a star will remain constant over the life of a star, but its apparent magnitude will change daily.

• Two stars can have the same absolute magnitude but different apparent magnitudes, depending on how far away they are.

• The measurement of the absolute magnitude of a star depends on the position of the observer; apparent magnitude does not.

The Hertzsprung-Russell diagram is used for classifying stars based on the relationship between their brightness and their temperature and color. A diagram is provided.

Which of the following is a trend among the main sequence stars?

• The larger stars emit light that is blue.

• Stars dimmer than the Sun are of class O or B

• The hotter the star, the more brightly it burns.

• Most of the stars are white or red.

Tags

NGSS.HS-ESS1-3

Which of the following is NOT a physical property commonly used by scientist to classify stars?

• Apparent magnitude

• Absolute magnitude (luminosity)

• Temperature

• State of matter

In comparison to the Sun, which of the following best describes Betelgeuse?

• Smaller in diameter

• Brighter and hotter

• Less bright, but hotter

• Cooler and brighter

Which of the following is an important property of stars, because it provides some information about the temperature of a star?

• The star's name

• The shape of the star

• The distance to the star

• The star's color

Jose is looking at stars with his farther and notices some of the stars are brighter than others. Jose's father tells him that the brightness of a star is one way that scientists determine the star's magnitude. What other property, which Jose and his father might observe, is used by scientists to classify stars?

• The star's rotation

• The constellation the star is in

• The star's color

• The gas that makes up the star