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- 1. Multiple ChoiceThe sun converts matter into energy in thecorona.radiative zoneconvection zonecore
- 2. Multiple ChoiceMost of the sun’s energy is a result ofnuclear fusionnuclear fissionatomic reactionscoronal mass ejection
- 3. Multiple ChoiceWhen hydrogen nuclei fuse into helium nucleithe nuclei die.energy is released.particles collideparticles neutralize.
- 4. Multiple ChoiceAuroras are frequently seennear the equator.before a sunspot cycle.every 11 years.after solar flares.
- 5. Multiple ChoiceWhich of the following is NOT a solar ejection?solar flareprominencesunspotcoronal mass ejection
- 6. Multiple ChoiceSunspots vary in a cycle that lasts about110 yrs11,000 yrs11 yrs110,000 yrs
- 7. Multiple ChoiceStrong magnetic fields on regions of the sun lead to sunspots becauseconvection slows and energy decreases.convection increases and energy increases.radiation slows and energy decreases.radiation increases and energy increases.
- 8. Multiple ChoiceIn the equation E=mc2, the letter E representsthe energy that is produced.the mass that is converted.the speed of light.the distance to Earth from the sun.
- 9. Multiple ChoiceWhat is the hottest layer of the sun’s atmosphere called?convective zonecoronaradiative zonephotosphere
- 10. Multiple ChoiceWhat elements make up most of the sun’s mass?carbon and oxygencarbon and hydrogenhelium and nitrogenhydrogen and helium
- 11. Multiple ChoiceParticles thrown off the sun’s corona that can affect Earth’s magnetic field are calleda coronal mass ejection.a coronal mass reflectionnuclear fusionsunspots
- 12. Multiple ChoiceDuring nuclear fusion in the sun, which of the following occurs?Atomic nuclei split apart.The aurora australis appears.hydrogen nuclei combine to produce a helium nucleus.A solar eclipse results
- 13. Multiple ChoiceScientists break up the sun’s light into a spectrum using a device called acoronaspectrographpositronchromograph
- 14. Multiple ChoiceWhat is a prominence on the sun?a part of the sun’s corona, a cloud of colored gasa disturbance in the sun’s atmosphere; an arched, glowing cloud of gasa part of the convective zone, a cool area with powerful magnetic fieldsa magnetic disruption in the sun’s photosphere
- 15. Multiple ChoiceWhat are northern lights?Aurorassolar flaresprominencescoronas
- 16. Multiple ChoiceMagnetic fields on the sun are produced by the sun’s uneven rotation andthe movement of sunspots on the sun’s surface.the movement of gases in the corona.gases in the convective zone.gases in the radiation zone.
- 17. Multiple ChoiceAstronomers observing spectral lines can observe red or blue shifts kn wavelengths, which can be used to determinethe direction of a star's motionthe composition of a starthe temperature of a starthe classification of a star
- 18. Multiple ChoiceWhat is a light year?the speed that light travels in a yearthe speed that light travels from the sun to earththe distance light travels in a year
- 19. Multiple ChoiceWhat type of galaxy is the Milky Way?Spiral galaxyElliptical galaxyNebulaGlobular cluster
- 20. Multiple ChoiceHow many stars are there in the Milky Way?HundredsHundreds of thousandsHundreds of millionsHundreds of billions
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