- 1. The Aurora Borealis, also known as the Northern Lights, is a natural light display in the Earth's sky predominantly seen in high-latitude regions. The mesmerizing and colorful light show is caused by the interaction of energetic particles from the Sun colliding with the Earth's magnetic field. This phenomenon creates stunning curtains or bands of light that dance across the night sky, with colors ranging from green and pink to purple and red. The Aurora Borealis is a breathtaking spectacle that has fascinated observers for centuries, inspiring awe and wonder in everyone fortunate enough to witness its beauty.
What is another name for Aurora Borealis?
A) Celestial Dance
B) Northern Lights
C) Polar Glows
D) Southern Lights
- 2. What causes the Aurora Borealis?
A) Airplane emissions
B) Light pollution
C) Solar wind interacting with Earth's magnetic field
D) Global warming
- 3. Which color is NOT commonly seen in the Aurora Borealis?
A) Red
B) Purple
C) Green
D) Pink
- 4. The Aurora Borealis is named after the Roman goddess of what?
A) Moon
B) Dawn
C) Sky
D) Sun
- 5. Which country is known for its excellent views of the Aurora Borealis?
A) Brazil
B) Australia
C) Kenya
D) Norway
- 6. Aurora Borealis can also be seen in which continent?
A) Africa
B) Asia
C) Antarctica
D) Europe
- 7. In which layer of the Earth's atmosphere do the Auroras occur?
A) Mesosphere
B) Thermosphere
C) Troposphere
D) Stratosphere
- 8. What color is predominantly seen in the Aurora Borealis?
A) Purple
B) Blue
C) Green
D) Red
- 9. What is the counterpart of the Aurora Borealis in the Southern Hemisphere called?
A) Midnight Showers
B) Aurora Australis
C) Southern Glow
D) Equatorial Lights
- 10. What is the phenomenon called when the Aurora Borealis appears directly overhead?
A) Arc
B) Belt
C) Corona
D) Halo
- 11. During which solar cycle phase are Aurora Borealis displays more frequent and intense?
A) Solar Minimum
B) Solar Eclipse
C) Solar Maximum
D) Solar Flare
- 12. Which season is typically the best for viewing the Aurora Borealis?
A) Spring
B) Winter
C) Summer
D) Autumn
- 13. Which planet in our solar system also displays auroras?
A) Jupiter
B) Mars
C) Saturn
D) Venus
- 14. What is the scientific name for the particles in the Aurora Borealis?
A) Gamma rays and X-rays
B) Electrons and protons
C) Alpha and Beta particles
D) Neutrons and photons
- 15. Which of these is not a common factor in determining the visibility of Aurora Borealis?
A) Altitude
B) Light pollution
C) Cloud cover
D) Solar activity
- 16. From which planet's mythology is the term 'aurora' derived?
A) Roman
B) Egyptian
C) Norse
D) Greek
- 17. Who first used the term 'aurora borealis' in English?
A) Hermann Fritz
B) Elias Loomis
C) Galileo Galilei
D) Pierre Gassendi
- 18. What is the width of the auroral zone in latitude?
A) ~800 km (approximately 8°)
B) ~1000 km (approximately 10°)
C) ~660 km (approximately 6°)
D) ~500 km (approximately 5°)
- 19. What is the term for the region that currently displays an aurora?
A) Auroral oval
B) Thermosphere
C) Magnetosphere
D) Exosphere
- 20. During which event were auroras seen even in the tropics?
A) Lunar eclipse
B) Halley's Comet appearance
C) Solar maximum
D) Carrington Event
- 21. What is the angle known as that determines an electron's trajectory around a field line?
A) Magnetic angle
B) Orbital angle
C) Inclination angle
D) Pitch angle
- 22. What is the phenomenon called when auroras are seen below the auroral zone due to a geomagnetic storm?
A) Expansion of the auroral oval
B) Polar shift
C) Contraction of the auroral oval
D) Magnetospheric reversal
- 23. What is the term for the weak glow observed around the two polar cusps?
A) Polar cusp glow
B) Solar wind glow
C) Coronal mass ejection glow
D) Magnetic field line glow
- 24. What is the term for the distance of an electron from a field line at any time?
A) Field strength radius
B) Magnetic radius
C) Orbital radius
D) Larmor radius
- 25. What is the term for auroras that occur poleward of the auroral zone?
A) Spirals or flickers
B) Diffuse patches or arcs
C) Curtains or rays
D) Bands or zones
- 26. What is the term for the phenomenon where auroras are seen as a greenish glow on the poleward horizon?
A) Horizon flicker
B) Equatorial glow
C) Poleward horizon illumination
D) Zenith light display
- 27. What is the term for the phenomenon where auroras are seen as if the Sun were rising from an unusual direction?
A) Twilight glow
B) Unusual sunrise effect
C) Sunrise illusion
D) Dawn light display
- 28. What is the term for the phenomenon where auroras are seen as a faint red glow?
A) Bright green flare
B) Vivid yellow burst
C) Deep blue shimmer
D) Faint red glow
- 29. What is the term for the phenomenon where auroras are seen as subvisual arcs?
A) Deep blue flickers
B) Visible green curtains
C) Bright yellow spirals
D) Subvisual red arcs
- 30. What is the term for the phenomenon where auroras are seen as poleward arcs stretching sunward across the polar cap?
A) Horizon arcs
B) Zenith arcs
C) Equatorial arcs
D) Poleward arcs
- 31. What is the term for the phenomenon where auroras are seen as dayside arcs near noon?
A) Dawn arcs
B) Midnight arcs
C) Dayside arcs
D) Nightside arcs
- 32. In what year did Carl Størmer and his colleagues begin using cameras to triangulate auroras?
A) 1911
B) 1930
C) 1900
D) 1925
- 33. What is the shape of arcs in an aurora?
A) Cover much of the sky.
B) Look like clouds.
C) Appear near the horizon.
D) Curves across the sky.
- 34. Which aurora form covers much of the sky and diverges from one point?
A) Patches or surfaces
B) Coronas
C) Arcs
D) Rays
- 35. What term did Brekke use to describe some auroras that resemble curtains?
A) Curtains
B) Coronas
C) Discrete auroras
D) Rays
- 36. What happens when arcs fragment or break up?
A) They form separate, rapidly changing features that may fill the whole sky.
B) They move closer to the horizon.
C) They disappear completely.
D) They become brighter.
- 37. What are discrete auroras known for?
A) Being bright enough to read a newspaper at night.
B) Covering much of the sky.
C) Looking like clouds.
D) Appearing near the horizon.
- 38. What wavelength does excited atomic oxygen emit at its highest altitudes to produce red auroras?
A) 557.7 nm
B) 630 nm
C) 500 nm
D) 428 nm
- 39. Which molecule's energy transfer contributes to the green emission in auroras?
A) Molecular hydrogen
B) Excited molecular nitrogen
C) Atomic nitrogen
D) Ionized molecular oxygen
- 40. At which altitudes do blue auroras typically appear?
A) Mid-altitudes dominated by green emissions.
B) Yet lower altitudes where atomic oxygen is uncommon.
C) Highest altitudes with high concentrations of atomic oxygen.
D) Above 100 km altitude.
- 41. What is the dominant wavelength for blue emissions in auroras?
A) 557.7 nm
B) 428 nm
C) 630 nm
D) 500 nm
- 42. What type of aurora is characterized by intensity variations over short timescales with periods typically between 2–20 seconds?
A) Coronas
B) Keograms
C) Substorms
D) Pulsating auroras
- 43. What is the typical duration for auroras to change from quiet arcs to active displays during an auroral substorm?
A) Weeks
B) Several hours
C) A few minutes
D) Days
- 44. What is auroral kilometric radiation (AKR) primarily characterized by?
A) X-ray emissions from particles associated with auroras
B) A strong radio emission around 150 kHz
C) Brighter emission stripes resembling sand dunes
D) Crackling noise caused by charged particles in an inversion layer
- 45. When was auroral kilometric radiation (AKR) discovered?
A) 2016
B) 1972
C) 2020
D) 2021
- 46. What is the temperature of STEVE?
A) The same as typical auroras
B) Room temperature
C) 3,000 °C (5,430 °F)
D) Below freezing point
- 47. Who discovered the dune aurora phenomenon?
A) Finnish citizen scientists
B) European Space Agency
C) American astronomers
D) NASA researchers
- 48. What is the maximum angle of northward IMF required for horse-collar auroras?
A) Less than 15 degrees
B) Within 30 degrees
C) More than 45 degrees
D) Exactly 90 degrees
- 49. In what year was the immediate cause of ionization and excitation leading to auroral emissions discovered?
A) 1985
B) 1970
C) 1960
D) 1955
- 50. Where did the pioneering rocket flight that led to the discovery of auroral particles take off from?
A) Alaska
B) Greenland
C) Fort Churchill in Canada
D) Norway
- 51. What is the process called when collisions with other atoms prevent emission of excitation energy?
A) Energy dissipation
B) Molecular collision
C) Photon absorption
D) Collisional quenching
- 52. What is the duration for oxygen to emit green light at 557.7 nm?
A) Instantaneous
B) 0.7 seconds
C) 5 seconds
D) 2 minutes
- 53. Who deduced that solar wind speed correlates with geomagnetic activity?
A) Schield et al.
B) Joan Feynman
C) Michael Faraday
D) Kristian Birkeland
- 54. What is the name of the spiral formed by the IMF due to the Sun's rotation?
A) Feynman spiral
B) Parker spiral
C) Birkeland spiral
D) Faraday spiral
- 55. What is the name of the current that detours through field lines closer to the equator?
A) Hall current
B) Partial ring current
C) Auroral electrojet
D) Region 2 current
- 56. What is the direction of IMF that facilitates magnetic reconnection at Earth?
A) Westward
B) Northward
C) Southward
D) Eastward
- 57. Who deduced the basic process by which an electric current is induced in a conductor moving through a magnetic field?
A) Schield et al.
B) Joan Feynman
C) Michael Faraday
D) Kristian Birkeland
- 58. In what year was a Japanese diary discovered that depicted auroras above Kyoto?
A) 2024
B) 2017
C) 1770
D) 1859
- 59. Who described the auroral events of the Carrington Event in a paper to the Royal Society?
A) Carrington
B) Hodgson
C) Elias Loomis
D) Balfour Stewart
- 60. In May 2024, where was the aurora borealis observed from as far south as?
A) New York City, USA
B) London, UK
C) Ferdows, Iran
D) Tokyo, Japan
- 61. Which Greek explorer described an aurora in the 4th century BC?
A) Seneca
B) Pliny the Elder
C) Pytheas
D) Tycho Brahe
- 62. In which work did Seneca classify auroras and describe their various forms?
A) Konungs Skuggsjá
B) Naturales Quaestiones
C) Natural History
D) Kepler
- 63. What is the earliest depiction of auroras believed to be found in?
A) Cro-Magnon cave paintings
B) Chinese chronicles
C) Japanese folklore
D) Greek manuscripts
- 64. What did the Gunditjmara people of western Victoria call auroras?
A) 'Puae buae' ('ashes')
B) 'Ed-thin'
C) 'Kootchee'
D) 'Tahunui-a-rangi'
- 65. Who theorized that an aurora was caused by a concentration of electrical charge in polar regions?
A) Anders Celsius
B) Kristian Birkeland
C) Tycho Brahe
D) Benjamin Franklin
- 66. Which European explorer recorded Native American views on auroras during his travels in 1771?
A) Walter William Bryant
B) Robert W. Service
C) Samuel Hearne
D) Frederic Edwin Church
- 67. Which Norwegian scientist developed a theory foundational to understanding geomagnetism and polar auroras?
A) Tycho Brahe
B) Benjamin Franklin
C) Kristian Birkeland
D) Anders Celsius
- 68. When was an aurora detected on Mars?
A) July 2015
B) In the 1950s
C) 14 August 2004
D) Between 2014 and 2016
- 69. Where was the Martian aurora located?
A) Near Olympus Mons
B) Terra Cimmeria, 177° east, 52° south
C) At Mars' equator
D) In Valles Marineris
- 70. What wavelength were cometary auroras on comet 67P observed at?
A) Radio wavelengths
B) Far-ultraviolet wavelengths
C) Visible light wavelengths
D) Infrared wavelengths
- 71. Which gas molecules are involved in the photodissociation causing comet 67P's auroras?
A) Carbon dioxide molecules
B) Oxygen molecules
C) Water molecules
D) Methane molecules
- 72. What was the first extra-solar aurora discovered over?
A) Comet 67P/Churyumov–Gerasimenko
B) The brown dwarf star LSR J1835+3259
C) Mars
D) A hot Jupiter exoplanet
- 73. How much brighter is the aurora over LSR J1835+3259 compared to Earth's northern lights?
A) Ten times brighter
B) Thousand times brighter
C) Hundred times brighter
D) A million times brighter
- 74. What is a possible cause of the auroras on LSR J1835+3259?
A) Solar wind interactions with a moon
B) Stellar winds stripping material from the surface
C) Magnetic field interactions with an exoplanet
D) Volcanic activity on the brown dwarf
- 75. Where was the time-lapse video of the Aurora Borealis shot over the winter of 2013/2014?
A) Tromsø
B) Norway
C) Iceland
D) Finland
- 76. In which year was a popular video of the Aurora Borealis taken in Norway?
A) 2009
B) 2014
C) 2013
D) 2011
- 77. What is the time span for the views in the Aurora Photo Gallery archived on 4 October 2011?
A) 2010–2012
B) 2013–2015
C) 2008–2010
D) 2009–2011
- 78. What is the duration of the documentary video about Northern Lights?
A) 5:00
B) 01:42
C) 1:55
D) 47:40
- 79. What is the duration of the video about the Geomagnetic Storm on Terschelling Island?
A) 1:55
B) 47:40
C) 5:00
D) 01:42
- 80. What is the duration of the time-lapse video from Finnish Lapland?
A) 5:00
B) 01:42
C) 47:40
D) 1:55
- 81. When was the time-lapse video from Tromsø recorded?
A) 24 November 2010
B) 6/7 April 2000
C) December 2011
D) Winter of 2013/2014
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