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- 1. Multiple Choice
If the stars in our galaxy were ranked in order, increasing in size, our Sun would be _____well below the midpointaround the midpointslightly above the midpointin the top 10% - 2. Multiple ChoiceThe vast majority of stars are _____red dwarfsyellow dwarfsyellow giantsneutron stars
- 3. Multiple ChoiceCompared to the diameter of the Earth, how wide is the Sun?10 times wider100 times wider1,000 times wider10,000 times wider
- 4. Multiple ChoiceHow many Earths could fit inside the Sun?about 13 thousandabout 130 thousandabout 1.3 millionabout 13 million
- 5. Multiple ChoiceWhat is the temperature of the Sun's core?15 thousand degrees Celsius150 thousand degrees Celsius1.5 million degrees Celsius15 million degrees Celsius
- 6. Multiple ChoiceIn the Sun's core, hydrogen atoms fuse together to form the heavier element _____sodiumheliumironuranium
- 7. Multiple ChoiceHow often does the Sun lose a mass equivalent to 15 Empire State Buildings?every secondevery minuteevery hourevery day
- 8. Multiple ChoiceIn the Sun, where does hydrogen fusion occur?only in the corein the core and convective zonefrom the core out to the photospherefrom the core out to the corona
- 9. Multiple ChoiceHeat transfer by the buoyant motion of the Sun's heated gases is called _____conductionconvectionthermal radiationcollusion
- 10. Multiple ChoiceWhich layer is thin enough to be transparent, and considered the Sun's surface?the convective zonethe photospherethe chromospherethe corona
- 11. Multiple ChoiceWhich ethereally thin layer is sort of like the Sun’s atmosphere?the convective zonethe photospherethe chromospherethe corona
- 12. Multiple ChoiceWhat name is given to the stream of subatomic particles moving away from the Sun?solar windaurora borealiscosmic duststellar gust
- 13. Multiple ChoiceThe speed of the solar wind is usually well over _____a hundred kilometers per houra thousand kilometers per houra million kilometers per houra billion kilometers per hour
- 14. Multiple ChoiceDuring hydrogen fusion in the Sun’s core, the energy is released mostly in the form of _____lightheatchemical energykinetic energy
- 15. Multiple ChoiceHow long does it take for the energy from the Sun's core to work it's way out?close to 200 yearsclose to 2,000 yearsclose to 20,000 yearsclose to 200,000 years
- 16. Multiple ChoiceThe Sun is made of "a gaseous soup of charged particles", called _____a plasmaionizing radiationauroraneutral gases
- 17. Multiple ChoiceWhat is the term for a dark region on the surface of the Sun?a solar vortexa field fluxa sunspota stellar speck
- 18. Multiple ChoiceProminences are huge arcs of material flowing along loops of _____gravitational field lineselectric field linesmagnetic field linesnuclear field lines
- 19. Multiple ChoiceWhat is the name for the localized explosion that blasts material off the surface of the Sun?a filamenta prominencea solar flarea coronal mass ejection
- 20. Multiple ChoiceWhat is the name for the "huge and strong" explosions that occur high off the Sun's surface?filamentsprominencessolar flarescoronal mass ejections
- 21. Multiple ChoiceThe Earth’s magnetic field can interact with the solar particles to form _____arrhythmiaarborealauroraaorta
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