Interplanetary medium is a lecture about an entity that occurs around and between planetary objects. It is a mini-lecture for a quiz section as part of the radiation astronomy department course on the principles of radiation astronomy.

Hubble's Wide Field Planetary Camera 2 snapped this new image of Vesta on May 14 and 16, 2007. Credit: NASA; ESA; L. McFadden and J.Y. Li (University of Maryland, College Park); M. Mutchler and Z. Levay (Space Telescope Science Institute, Baltimore); P. Thomas (Cornell University); J. Parker and E.F. Young (Southwest Research Institute); and C.T. Russell and B. Schmidt (University of California, Los Angeles).

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Quiz edit


1 Which of the following are cosmogonical phenomenon associated with the Sun, or solar system?

watery abyss
cold dark matter
unseen mass
Silver age

2 Complete the text:

Match up the item letter with each of the possibilities below:
Balloons - A
Sounding rockets - B
Aircraft assisted launches - C
Orbital rocketry - D
Shuttle payload - E
Heliocentric rocketry - F
Exploratory rocketry - G
Lunar rover - H
Ranger 5

microcalorimeter arrays

MeV Auroral X-ray Imaging and Spectroscopy

Lunokhod 2



Broad Band X-Ray Telescope

Solar Heliospheric Observatory


3 The relative abundances of solar cosmic rays reflect those of the solar

4 Complete the text:

Match up the type of Sun system astrogony with each of the possibilities below:
Babylonian epic story of creation - A
a primordial or first Greek god - B
the primeval chaos - C
creation of heaven and earth - D
Greek god personifying the sky - E
Cronus (Saturn) castrating his father - F
separation of the waters by a firmament

Chaos magno


watery abyss


Enuma Elish


5 True or False, The visible path of a meteoroid that has entered the Earth's atmosphere is called a meteorite.


6 Which phenomena are associated with the heliosphere?

a region of space where the interstellar medium is blown away by the solar wind
a bubble in space
virtually all the material emanates from the Sun itself
Voyager 2
Voyager 1
the termination shock

7 Yes or No, According to Hesiod's Theogony, Uranus was conceived by Gaia alone, but other sources cite Aether as his father.


8 A natural rocky source of chemicals from the sky to the ground may originate from what astronomical source?

the solar wind
the diffuse X-ray background
Mount Redoubt in Alaska
the asteroid belt
the International Space Station

9 That part of outer space between planets and their star(s) is called the?

10 Which of the following phenomena are associated with Venus?

separate stars, Phosphorus, the morning star, and Hesperus, the evening star
locally available carving tools
the ionosphere was observed to become elongated downstream, rather like a long-tailed comet, during a rare period of very low density solar outflow
Lucifer, literally "Light-Bringer", and Vesper
currently dormant volcanoes only on the Sun-facing side
a breathable atmosphere

11 True or False, Chemical ions above the Earth's atmosphere, moving at very high speeds constitute the interplanetary medium.


12 Chemistry phenomena associated with astronomy are

at least three-quarters of the human genome

13 With respect to the zodiacal light which group of middle-easterners worshipped it?

14 Which of the following refer to an aspect of current cosmogonic models?

fragmentation of asteroids
transformation by accretion
kilometer-size objects
hyperbolic comets
asteroid belt
bodies comparable in size to the Earth

15 Complete the text:

The majority of known asteroids orbit the Sun between the orbits of



16 One of the substances discovered in the tail by spectroscopic analysis was the toxic gas

17 True or False, Pluto is in the Kuiper belt.


18 Which of the following is characteristic of the scattered disc

a distant region of the solar system
the dwarf planet Eris
orbital eccentricites ranging up to 0.8
inclinations as high as 50°
perihelia greater than 30 AU

19 True or False, A new cosmogony predicts that all particles in one stream have the same mineral composition.


20 A cloud at nearly a quarter of the distance to Proxima Centauri is called the

21 The point where the interstellar medium and solar wind pressures balance is called the

22 Which of the following are associated with electromagnetics?

angular momentum transfer
solar wind
the baryon neutrino
charge neutralization

23 True or False, Fluxes of ions should be measurable from a detector in a 100 km lunar orbit.


24 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


25 The process of bombardment-induced surface alteration or damage is called.

26 True or False, The primeval chaos consisted of a plasma abyss.


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

28 Random fluctuations in the intensity of radio waves of celestial origin, on a timescale of a few seconds is referred to as interplanetary?

29 True or False, An oxygen isotope discrepancy was noted forty years ago in a stony meteorite that exploded over Pueblito de Allende, Mexico.


Hypotheses edit

  1. This research learning resource could be re-titled to Astronomy/Mediums/Interplanetaries

See also edit

External links edit

{{Radiation astronomy resources}}