Radiation astronomy/Electromagnetics/Quiz

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A new image from all three of NASA's Great Observatories--Chandra, Hubble, and Spitzer--has been created of the star-forming region 30 Doradus, also known as the Tarantula Nebula. Credit: NASA.

Electromagnetic astronomy is a lecture and an article from the astronomy department.

This is a quiz based on the lecture that you are free to take at any time or knowledge level.

Once you’ve read and studied the lecture itself, the links contained within the article and lecture, listed under See also and External links, you should have adequate background to take the quiz and score highly. The templates {{astronomy resources}} and {{principles of radiation astronomy}} may also be helpful.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

Enjoy learning by doing!

Quiz[edit]

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Points for a wrong answer:
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1. True or False, Extraterrestrial radiation sources only irradiate the surface of the Earth at night.

TRUE
FALSE

2. Which of the following is not a characteristic of radiation?

throwing a beam
a stream of charged or neutral particles
calculating the energy of a beam
sending out a traveling ray
a secondary-object hazard

3. True or False, A yellow aurora seen above the Earth's surface could be due to oxygen, nitrogen or a composition of colors.

TRUE
FALSE

4. Which of the following are radiation astronomy phenomena associated with the Sun?

the color of the upper rim as seen from Earth
an excess brightness at or near the edge of the Sun
the iron XIV green line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

5. Yes or No, Atmospheric oxygen is a likely source of red auroras above the Earth.

Yes
No

6. True or False, Atmospheric nitrogen is a likely source of blue auroras above the Earth.

TRUE
FALSE

7. Which of the following are radiation astronomy phenomena associated with the rocky-object Io?

surface regions reflecting or emitting violet or purple
an excess brightness at or near the edge
red regions that may be phosphorus
neutron emission
polar coronal holes
auroras

8. True or False, A celestial display such as an aurora can be generated by a coronal mass ejection, or CME, from the Sun.

TRUE
FALSE

9. Azurite is a natural pigment composed of what likely source of blue?


10. True or False, An orange aurora seen above the Earth's surface could be due to oxygen, nitrogen or a composition of colors.

TRUE
FALSE

11. Complete the text:

Vega has a surface temperature of approximately , is spectral type , has stellar companions in a binary or multiple star system, and is a suspected star.

12. True or False, An aurora seen above the Earth's surface could be due to cosmic rays.

TRUE
FALSE

13. Complete the text:

and radiation are best absorbed by atoms with heavy nuclei.

14. Which of the following is not a phenomenon associated with optical astronomy?

actuators may be a part of active optics
the Vela satellites were the first devices in space ever to detect optical bursts
the Moon
an emission with a wavelength of 320 nm
adaptive optics
the color index

15. Which of the following are electromagnetic radiation astronomy phenomena associated with the gaseous-object Neptune?

Voyager 2
blue rays
clouds
neutron emission
polar coronal holes
meteor emission
rotation

16. True or False, A violet aurora seen above the Earth's surface could be due to oxygen, nitrogen, argon, hydrogen or a composition of colors such as red and blue producing purple.

TRUE
FALSE

17. Which of the following is not a phenomenon associated with violet astronomy?

photographs of the planet Venus taken in 1927
the purple haze within a few arcseconds of the central star of the Homunculus
the faintness of carbon stars
the stellar abundance of aluminum
adaptive optics
the helium beta line

18. True or False, A cyan aurora seen above the Earth's surface could be due to oxygen, nitrogen, argon, hydrogen or a composition of colors such as green and blue.

TRUE
FALSE

19. Complete the text:

Although is usually not recognized as a formal branch of , the measurement of fluxes help to understand a variety of natural electromagnetic phenomena.

20. Which of the following is a phenomenon associated with yellow astronomy?

Saturn
sodium line emission
sunspots on the Sun
an emission with a wavelength of 420 nm
phosphorus
TiO
yellow auroras

21. Complete the text:

Methane possesses prominant in the visible and near-infrared (IR) making aquamarine or in color.

22. Which of the following is not a phenomenon associated with red astronomy?

a stellar class M dwarf
the hydrogen Balmer alpha line
the photosphere of the Sun
an emission with a wavelength of 618 nm
lithium
"cometary knots"
red auroras

23. True or False, The Earth's atmosphere does not transmit infrared radiation between 6 and 7 microns in wavelength because of water vapor.

TRUE
FALSE

24. Various radiation observatories occur at different altitudes and geographic locations due to what effect?

the presence of oceans on the Earth
locally available carving tools
light pollution
most astronomical objects are observed at night
currently dormant volcanoes seldom erupt
human habitation increases near an astronomical observatory

25. True or False, A metallic or stony object that is the remains of a meteor is called a meteoroid.

TRUE
FALSE

26. Which of the following is not a radiation phenomenon associated with a planet?

airglow
elongated dust particles
high albedo
olivine
Rayleighs
coronal mass ejection

27. Complete the text:

Astronomers place the submillimetre waveband between the and wavebands, typically taken to be between a few hundred micrometres and a millimetre.

28. True or False, The V 2 rocket was first used as a sounding rocket for auroral astronomy before being converted to a weapon.

TRUE
FALSE

29. True or False, Jupiter shows intense X-ray emission associated with auroras in its polar regions.

TRUE
FALSE

30. True or False, Hydrogen has an emission line in the yellow.

TRUE
FALSE

31. True or False, The planet Saturn exhibits a pale yellow hue due to ammonia crystals in its upper atmosphere.

TRUE
FALSE

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Hypotheses[edit]

Main source: Hypotheses
  1. Quiz questions about electromagnetics may be made too difficult.

See also[edit]

External links[edit]