Radiation astronomy/Hydrometeors/Quiz

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Nimbostratus virga is shown. Credit: Simon Eugster.

Hydrometeor radiation astronomy is a lecture for the radiation astronomy department course on the principles of radiation astronomy.

You are free to take this quiz based on hydrometeor radiation astronomy at any time.

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Quiz[edit | edit source]


1 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

2 Which of the following is not a radiation phenomenon associated with a comet?

elongated dust particles
high albedo
coronal mass ejection

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

neutron emission
polar coronal holes
meteor emission

4 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


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

6 Which weather phenomena are most likely to interfere with observing stars?

a late-summer rainstorm
a clear sky
an approaching dust storm
below normal temperatures
a typhoon
a snow fall

7 True or False, A hydrometeor is a precipitation product.


8 Usually associated with clouds filling the sky, thunder and lightning, wind and what water based meteorites

9 True or False, A lithometeor is a rocky-object meteor.


10 The North Atlantic Current (NAC) may be associated with which of the following?

North Atlantic Drift
North Atlantic Sea Movement
warm western boundary current
within the Atlantic Ocean
extends the Gulf Stream northeastward

11 True or False, A cryometeor is a very large chunk of amber.


12 Complete the text:

An aerometeor is a

unit of air traveling or

through an atmosphere.

13 Yes or No, The North Pacific Subtropical Gyre is an anticyclone meaning the circulation is in a clockwise direction around its high pressure at the center because of its placement in the Northern Hemisphere.


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

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


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

17 True or False, Clouds are a form of radiation because they have a temperature gradient.


18 True or False, The North Pacific Subtropical Gyre and the much smaller North Pacific Subpolar Gyre make up the two major gyre systems in the mid-latitudes of the Northern Pacific Ocean driven by the Trade winds and westerly winds.


19 The North Pacific Gyre is the

largest ecosystem
solar wind
on Earth
between the equator
and 50° N latitude
comprising 20 million square kilometers

20 True or False, In oceanography, a gyre is any large system of circulating ocean currents, particularly those involved with large wind movements.


21 Complete the text:

Precipitation products of the condensation of atmospheric

are called


22 True or False, Sudden flash floods that happen because of heavy rains is the biggest reason for weather-related deaths.


23 Which of the following are radiation astronomy phenomena associated with a thunderstorm

a storm
meteor emission

24 True or False, Liquid moisture that falls visibly in separate drops is called rain.


25 Complete the text:


on the island of Maui has the highest average annual

in the


26 True or False, Rainbands in advance of warm occluded fronts and warm fronts are associated with weak upward motion.


27 Which of the following is not a characteristic of showers?

throwing a beam

28 True or False, Bands of thunderstorms can form with sea breeze and land breeze boundaries.


29 Which of the following are radiation astronomy phenomena associated with rainbands?

cloud and precipitation area
an excess brightness at or near the edge
significantly elongated
warped by mountain barriers
generated by differences in temperature
can be stratiform or convective
in advance of warm occluded fronts

30 True or False, Drizzle is a light liquid precipitation consisting of liquid water drops smaller than those of rain.


31 One difference between mist and fog is


32 True or False, Water or other liquid finely suspended in air is called a mist.


33 Mechanisms of producing precipitation include

gas-expansion velocity decreases
adaptive optics
the light of the neutral CN-radical

34 Yes or No, Short, intense periods of rain in scattered locations are called "showers."


Hypotheses[edit | edit source]

  1. Meteors range in size from galaxy clusters to dust grains and molecular clusters.

See also[edit | edit source]

External links[edit | edit source]

{{Radiation astronomy resources}}