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What is the name of the object that can be seen in the darker splotchy area of the sun?

• sunspot

• solar flare

• gamma rays

• prominence

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

• conduction

• convection

• nuclear fusion

• radiation

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Which of these features would scientists most likely describe as a scarf unrolling into space from the sun’s surface?

• a convection cell

• a sunspot

• a solar flare

• a prominence

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The process that heat is transferred by circulation of matter through a fluid is

• radiation

• convection

• conduction

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The process by which energy is transferred as electromagnetic waves is called

• radiation

• convection

• conduction

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The sun produces large amounts of energy. By what process does the sun produce energy?

• radiation

• convection

• nuclear fusion

• electromagnetic radiation

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A satellite took x-ray pictures of a solar flare. How would you claim the solar flare most likely appeared on the x-ray pictures?

• as a dark spot

• as a swirl of red flames

• as a flamelike projection

• as an area of bright white light

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TRUE/FALSE: The sun rotates faster at its equator than at the poles.

• TRUE

• FALSE

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Compared to Earth, the structure of the sun shares this characteristic

• both have nuclear fusion at the core

• both have differential rotation at its core

• both have layered atmospheres

• both are composed of gas

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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