Unit 3: Star Properties Review

Use the HR-diagram on the left 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.

Tags

NGSS.HS-ESS1-3

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 the Sun's rotational pattern?

• 
• 
• 
• 

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.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Use the diagram to the left 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 to answer the following question:

Which solar property is represented at number nine?

• core

• flare

• sunspot

• prominence

Tags

NGSS.HS-ESS1-1

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

Which option below describes how scientists use characteristics to classify stars?

• The size of the star is used to classify it by color.

• The apparent magnitude classifies it by energy.

• The rotation to classify it by its distance from Earth.

• The surface temperature is used to classify it by color.

The table compiles information about two stars.

What statement explains the difference between how Sirius and Betelgeuse appear from

Earth?

• Sirius appears brighter because it is closer to Earth.

• Betelgeuse appears brighter because it is closer to Earth.

• Sirius appears brighter because it has a greater absolute brightness.

• Betelgeuse appears brighter because it has a greater absolute brightness.

Which color would indicate the coldest star?

• Red

• Blue

• White

• Yellow

The diagram shows a person standing between two stars of the same size, color, and brightness.

The person states that Star A looks brighter than Star B. What is the person describing?

• sequence

• temperature

• absolute brightness

• apparent magnitude