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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

• white, blue, yellow, red

• yellow, white, blue, red

• blue, yellow, white, red

Which statement best describes stars?

• Large planets that are composed mostly of gases

• Celestial bodies made up of gas that give off light

• Faint dots of light that can be seen from Earth's surface

• Objects that form in the outer parts of the solar system

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 term best describes the movement of matter due to temperature differences in the sun?

• conduction

• convection

• nuclear fusion

• radiation

Tags

NGSS.MS-PS1-4

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

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

Which stars in the diagram are the coolest?

• white dwarfs

• super giants

• the stars in the upper left corner on the main sequence

• there is no way to know from the diagram

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