Radiation astronomy/Fieries/Quiz

Fiery-meteor radiation astronomy is a lecture offered by the radiation astronomy department. It is included in the {{radiation astronomy resources}} template.

A bolide is a very bright meteor of an apparent magnitude of −14 or brighter. Credit: Thomas Grau.

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


2 Which of the following are radiation astronomy phenomena associated with comets?

low albedo
relatively featureless
cyanogen detected
neutron emission
rotationally asymmetric
meteor emission
changes in its tail

3 True or False, There are green or green mineral containing asteroids.


4 Moldavite is a mineral that may be associated with what green astronomy phenomenon?

predicting the end of the Earth
determine the accuracy of local computers
meteorite impacts
demonstrating that Venus was once a comet
predict when currently dormant volcanoes will erupt
green fireballs

5 Yes or No, A comet is a small solar system body that has a solid icy nucleus.


6 Complete the text:

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



7 True or False, The International Astronomical Union defines a fireball as a meteor brighter than any of the planets (magnitude −4 or greater).


8 Phenomena associated with some meteorites?

have a gaseous surface
long nickel-iron crystals

9 Yes or No, A typical comet nucleus has an albedo of 0.04.


10 A thin-section of a meteorite that may be analyzed has which of the following?

a great many light gray and dark gray chondrules present
large grain cross sections making sizing easy
an available sizing or magnification marker
independent verification as a meteorite
correctable diameters and relative abundances
optical conditions

11 True or False, The NASA All-sky Fireball Network is a network of cameras set up by the NASA Meteoroid Environment Office (MEO) with the goal of observing meteors brighter than the planet Venus, which are called fireballs.


12 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

13 Yes or No, A fireball reaching magnitude −14 or brighter is called a bolide.


14 Complete the text:

Match up the form or type of quartz with the effect:
alpha quartz - A
coesite - B
cristobalite - C
stishovite - D
seifertite - E
tridymite - F
10 GPa and above 1200°C

2-3 gigapascals and 700°C

22-460°C tabular crystals

trigonal tectosilicate

35 GPa to 40 GPa orthorhombic

1470°C cubic or tetragonal form


15 True or False, A fireball reaching an magnitude −17 or brighter is called a superbolide.


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

the Moon
the asteroid belt

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


18 Considering that many rock types bear a striking resemblance to meteorites which are the one or few ways to differentiate a meteorite from a terrestrial rock?

the Ca/Si ratio
the Al/Si ratio
enstatite rather than diopside
oxygen isotope ratios
observed orbit and fall with verified recovery

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


20 Yes or No, A map released by NASA's Near Earth Object (NEO) Program reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with random distribution around the globe.



  1. Meteorites should also be coming into Earth from other large rocky objects such as Mercury, asteroids, and the satellites of the gas giants.

See alsoEdit

External linksEdit