Astronomy Review Stars

During science class, Ava and Justin were discussing the speed of the Sun’s rotation, and debating over which model would best illustrate the different speeds in each zone. As they were reviewing the different models, they noticed that the more arrow heads in a region showed a greater speed. Which model below best represents how the Sun's rotational pattern?

• A

• B

• C

• D

Destiny was looking at different stars in the night sky with her telescope and noticed that some stars were red while other stars were blue. What answer choice below best describes why a star would appear to have a different color?

• Blue stars are hotter than red stars.

• Red stars are hotter than blue stars.

• Blue stars are closer to Earth than red stars.

• Red stars are closer to Earth than blue stars.

Aaleyah learned that astronomers use different properties, such as their brightness, to classify stars. Which other property can scientists use to classify stars?

• The star’s rotation to calculate the distance from Earth.

• The color to classify the absolute brightness of the star.

• The size of the star to categorize them in the main sequence.

• The apparent magnitude is used to classify the energy of the star

Use the HR-diagram below to answer the following question.

Which of the following statements accurately describes one of the stars in the HR diagram?

• Star A is the brightest star.

• Star B is a red star

• Star C is the dimmest star.

• Star D is the hottest star

The table below compiles information about the distance of various stars from Earth, their apparent magnitude, and their absolute brightness.

Which statement about the absolute brightness of Vega and Arcturus is correct?

• Arcturus has less absolute brightness than Vega.

• Arcturus has a greater absolute brightness than Vega

• Vega has a greater absolute brightness than Arcturus.

• Vega and Arcturus have the same absolute brightness.

Tags

NGSS.HS-ESS1-3

Use the diagram below to answer the following question.

How would scientists describe the properties of Star X compared to the Sun?

• Star X is dimmer and hotter than the Sun.

• Star X is brighter and hotter than the Sun.

• Star X is brighter and cooler than the Sun.

• Star X is dimmer and cooler than the Sun.

Use the image below to answer the following question.

Which solar property is represented at number nine?

• core

• flare

• sunspot

• prominence

Which of the following options correctly lists the Sun's layers from inner layer to outer layer?

• core, convection zone, photosphere, radiative zone, corona, chromosphere

• core, radiative zone, convection zone, photosphere, chromosphere, corona

• corona, radiative zone, photosphere, chromosphere, convection zone, core

• corona, convection zone, radiative zone, photosphere, chromosphere, corona

Felix examined several photos of stars. To compare their temperatures, he looked at the colors of the stars. He organized the photos in order from coolest to hottest. Which of these answers shows the correct order? 

• red, yellow, white, blue
• blue, yellow, white, red
• yellow, white, blue, red
• white, blue, yellow, red

Based on the chart above, which Star would appear the dimmest when observed from Earth? 

• Sirius
• Rigel
• Arcturus
• Alderbaran