SC 7 E 6 6

Which of the following pairs of terms directly relates to the actual brightness of a star?

• absolute magnitude and luminosity

• apparent magnitude and luminosity

• size and luminosity

• absolute magnitude and apparent magnitude

Which one of these claims can be made based on evidence in the graph?

• Red super giants have higher temperatures than main sequence stars.

• Blue giants have higher temperatures than white dwarfs.

• Blue giants have higher temperatures than red super giants.

• Main sequence stars have higher temperatures than white dwarfs.

Scientists have determined that the sun will continue to consume hydrogen in its core for another five billion years or so. After the hydrogen is consumed, what will be its primary fuel?

• Helium

• Magnetism

• Nitrogen

• Oxygen

Tags

NGSS.HS-ESS1-1

What is unique about the rotation of the sun?

• It spins way faster than the planets.

• It spins extremely slow.

• The top half spins one direction and the bottom half spins the opposite direction.

• Some areas spin faster than others.

In which layer of the sun does convection occur?

• core

• chromosphere

• convection zone

• photosphere

In which layer of the sun does nuclear fusion take place?

• Core

• Radiative zone

• Chromosphere

• Corona

Tags

NGSS.HS-ESS1-1

What are the layers of the sun's atmosphere?

• Core, chromosphere, corona

• Photosphere, radiative zone, corona

• Radiative zone, chromosphere, core

• Photosphere, chromosphere, corona

Two stars have the same apparent magnitude as seen from Earth’s surface. Star A is 33 light-years away. Star B is 346 light-years away. Which of the following claims is supported by the evidence?

• Star B is larger than star A

• Star B is more luminous than star A

• The stars have the same absolute magnitude

• Star A has a smaller absolute magnitude

The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Which reasoning explains why the sun and moon appear to be the same size when viewed from Earth?

• The moon is much hotter than the sun

• The moon is much denser than the sun

• The moon is much brighter than the sun

• The moon is much closer to Earth than the sun

Tags

NGSS.MS-ESS1-3

An astronomer observes that the color of a star is similar to the color of the sun. Therefore, she infers that the star and the sun have similar sizes and surface temperatures. Using this information, what can the astronomer conclude about the star?

• The star s a white dwarf

• The star is medium sized

• The star is hotter than most other stars in our galaxy

• The star is brighter than most other stars in our galaxy