Radiation astronomy/Planets/Quiz

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The Trundholm Sun chariot pulled by a horse is a sculpture believed to be illustrating an important part of Nordic Bronze Age mythology. The sculpture is probably from around 3350 b2k. It is displayed at the National Museum of Denmark. Credit: Malene Thyssen.{{free media}}

Planetary radiation astronomy is a radiation astronomy lecture observing planets and using planets as radiation for the course on the principles of radiation astronomy.

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

Once you’ve read and studied the lecture itself, the links contained within the article/lecture, listed under See also, External links and in the {{principles of radiation astronomy}} template, you should have adequate background to take the quiz.

Suggestion: Have the lecture available in a separate window.

Enjoy learning by doing!

Quiz[edit | edit source]


1 Complete the text:

Match up the item letter with each of the cosmogonic possibilities below:
interior models of the giant planets - A
high interest for cosmogony, geophysics and nuclear physics - B
hierarchical accumulation - C
clouds and globular clusters - D
cosmic helium abundance - E
deuterium fusion - F
a large deficiency of light elements - G
after galactic sized systems had collapsed - H
the motions of hydrogen

formation of luminous quasars

stars with an initial mass less than the solar mass

rotating liquid drops

primordial is less than 26 per cent

a solar mixture of elements dominated by hydrogen and helium gas

around 13 Jupiter masses

smaller rocky objects


2 The charge on a planetary dust particle may change with?

3 Which of the following are radiation astronomy phenomena associated with the apparent liquid-object Earth?

neutron emission
polar coronal holes
meteor emission

4 With respect to protoplanetary disks what green mineral has been found?

5 Why is much of the surface of Mars covered with red iron oxide dust when the rocks that compose much of its surface are blue or violet?

Mars has been systematically bombarded with small iron-nickel meteorites or micrometeorites that oxidize in its atmosphere
Mars has been frequently bombarded with hematite containing micrometeorites
asteroid impacts on Mars may have forced iron from near its core into the atmosphere and onto the surface as hematite dust that oxidized
Mars is like Earth in surface hematite composition, but Earth has much more water
precipitation from iron-rich water

6 Which group of astronomers were the first to keep written records of what they learned about the heavens?

7 Which of the following is not a phenomenon associated with the history of violet astronomy?

photographs of the planet Venus taken in 1927
two nebulous bright streaks running approximately perpendicular to the terminator on Venus
observations of Venus in 1959 with spectrographs show a wide continuous absorption
the stellar abundance of aluminum
the Galileo spacecraft observed Venus
the helium beta line

8 Who first proposed the hypothesis that the Sun is at rest, while the Earth and the planets rotate about the Sun?

9 Observations of comets have benefited greatly from what phenomenon of cyan astronomy?

Cherenkov radiation
the electric blue glow of lightning
gas-expansion velocity decreases with increasing heliocentric distance
methane possesses prominent absorption bands in the visible
adaptive optics
the light of the neutral CN-radical

10 True or False, The astronomer Clyde Tombaugh is the discoverer of Charon.


11 Which of the following is a phenomenon associated historically with yellow astronomy?

sodium line emission
sunspots on the Sun
an emission with a wavelength of 420 nm

12 True or False, To ancient astronomers stars remain relatively fixed over the centuries while planets move an appreciable amount during a comparatively short time.


13 What term was first used with reference to the transfer of momentum from the Sun to the planets in 1942

14 True or False, The Sun is a classical planet.


15 From a historical perspective which of the following is not characteristic of the solar corona

the solar corona is electric
it drives away the tails of comets
a net charge on the Sun of approximately -0.3 x 1028 e.s.u.
extrasolar planets
the Reverend Lecturer referring to coronal holes
"the coronoidal discharges in poor vacua obtained by Prof. Pupin about an insulated metal ball are exceedingly like the rays and streamers of the solar corona."

16 True or False, The observations of planetary motion agree with computed orbits to the accuracy of the observations.


17 Name a classical planet that was not apparently seen in the sky before 5102 b2k

18 To the Babylonians, this object represented their god Marduk.

19 On 19 May 1910, the Earth actually passed through the tail of what comet.

20 Meteorites found on Earth may be from which of the following?

the Moon
the asteroid belt

21 True or False, Mars may have suffered asteroid impacts.


22 Which of the following are radiation astronomy phenomena associated with the gaseous-object Neptune?

Voyager 2
blue rays
neutron emission
polar coronal holes
meteor emission

23 Yes or No, A cometary orbit about the Sun is a radiation astronomy phenomenon.


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

elongated dust particles
high albedo
coronal mass ejection

25 Complete the text:

The 0.6 m Tortugas Mountain Observatory is used to monitor the temporal changes in the

cloud deck and equatorial activity on


26 Historically, orange astronomy is not known for which of the following?

Alpha Centauri B
Epsilon Eridani
K spectral type stars
the Bayer designation for a star
the Indian city of Pondicherry in December 1689

27 Soon after the invention of radar astronomy, what classical planet was detected

28 Various gaps and density minima have been observed in the Saturnian


29 Before the current era and perhaps before 6,000 b2k which classical planet may have been green?

30 Complete the text:

The moon was formed independently of the earth and later

, presumably by a


Hypotheses[edit | edit source]

  1. The history of planetary radiation astronomy dates at least to 42,000 b2k.

See also[edit | edit source]

External links[edit | edit source]

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