Earth orbits/Astronomy/Quiz

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This exploded view of the EXOSAT satellite shows the instruments and the principal spacecraft subsystems. Credit: ESA, Brian G. Taylor and others on the EXOSAT programme.

Earth-orbit astronomy is a lecture of radiation astronomy courses project that may be included in courses like principles of radiation astronomy.

You are free to take this quiz 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 {{radiation astronomy resources}} template, you should have adequate background to get 100 %.

Suggestion: Have the lecture available in a separate window.

Enjoy learning by doing!

Quiz[edit | edit source]


1 A U.S. government project conducting research into the firing of high-velocity projectiles high into the atmosphere using a two stage light gas gun, with the ultimate goal of propelling satellites into Earth orbit was called


2 Complete the text:

Match up the altitude region with its altitude:
troposphere - A
stratosphere - B
mesosphere - C
thermosphere - D
exosphere - E
58 to 68 km

surface to between 8,000 and 18,000 m

143 km to 153 km

10,818 to 10,828 km

818 km to 828 km


3 Which of the following are associated with the Earth's radius?

the delta of the Mississippi river is higher than its source
a unit of distance in astronomy and geology
falls between the equatorial maximum and the polar minimum
the geoid length
a balloon
McMurdo Station

4 True or False, The Saturn V put Skylab into Earth orbit.


5 Which of the following are theoretical radiation astronomy phenomena associated with a satellite in orbit around the Earth?

background radiation
a charged particle wind which emanates out of a beam line
near the barycenter for the Earth-Moon system
swirls of tan, green, blue, and white in the water
electric arcs
chlorophyll-containing phytoplankton aloft in the upper atmosphere

6 Complete the text:

Match up the altitude with its concept:
altitude - A
meters above sea level - B
indicated altitude - C
absolute altitude - D
true altitude - E
height - F
pressure altitude - G
density altitude - H
altitude in terms of distance above a certain point


usually a vertical distance measurement

altitude in terms of the density of the air

the altimeter reading

altitude in terms of air pressure

altitude in elevation above sea level

distance above the ground directly


7 Which of the following are observatories on Earth?

Chandra X-ray Observatory
Big Bear
the Hubble
Lomnický štít

8 Yes or No, A sunrise may be detected by an airborne observatory.


9 Which of the following are observatories on Earth?

Chandra X-ray Observatory
Giza Pyramids
Tuorla Observatory
the Hubble
Aldershot Observatory

10 True or False, A sunrise may be detected by an Earth-orbit observatory.


11 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


12 Yes or No, A Low Earth Orbit (LEO) is 6,530 to 8,370 km distant from the center of the Earth.


Hypotheses[edit | edit source]

  1. Earth-orbit astronomy from sufficient altitude should be able to almost replace sounding rockets.
  2. The much lower cost of balloons or sounding rockets keeps them as a value.

See also[edit | edit source]

External links[edit | edit source]

{{History of science resources}}