UCA-5 Practice
Study online at https://quizlet.com/_hmbo3v
1. The Dawn spacecraft was able to visit 2 solar system objects because of its ion
engines. Which objects were these?
a.Our Moon and Mars.
b.Mercury and Venus.
c.Mars and Jupiter.
d.Vesta and Ceres.
e.Jupiter and Saturn.: d.Vesta and Ceres.
2. Which spacecraft will never leave the solar system and venture into interstel-
lar space?
a.Voyager 1.
b.Voyager 2.
c.Pioneer 10.
d.Pioneer 11.
e.Deep Space 1.: e.Deep Space 1.
3. Have any spacecraft ever left the solar system?
a.yes, Pioneers 10 & 11 and Voyagers 1 & 2
b.yes, only Pioneers 10 & 11
c.no spacecraft have ever left the solar system
d.yes, only New Horizons that first visited Pluto
e.yes, only Voyagers 1 & 2: a.yes, Pioneers 10 & 11 and Voyagers 1 & 2
4. Telecommunication satellites are most often located in which orbits?
a.MEO
b.HEO
c.GEO
d.GSO
e.Lunar: c.GEO
5. Based upon the recent young galaxy observations of the James Webb Space
Telescope, what is an important conclusion that can be drawn?
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a.Both young galaxies are located in the well developed Abell 2744 cluster.
b.Both young galaxies have appreciable spiral structure.
c.Both young galaxies have appreciable size and structure.
d.Both young galaxies have evidence of supernovae explosions
e.Both young galaxies have appreciable blue colouration and spherical
shapes..: c.Both young galaxies have appreciable size and structure.
6. Forward contamination:
a.occurs just after liftoff of a rocket as it passes through the lower Earth's
atmosphere.
b.is when a spacecraft payload is integrated with the upper stage of the rocket.
c.refers to the possibility of contaminating other worlds with terrestrial organ-
isms.
d.refers to the possibility of contaminating other Earth with alien organisms.
e.arises during fuel loading of a rocket, specifically the ozidizer.: c.refers to the
possibility of contaminating other worlds with terrestrial organisms.
7. Solar panels on a spacecraft
a.are usually very small in area especially when travelling in the outer solar
system.
b.provide the electricity that powers the systems (computers, science instru-
ments, etc.).
c.can only be used successfully when flying towards the Sun.
d.allow the RTGHS to operate efficiently.
e.create drag which allows the spacecraft to maneuver in space.: b.provide the
electricity that powers the systems (computers, science instruments, etc.).
8. It is estimated that if a matter - anti-matter propulsion system could be
created, it would take how much "fuel" for a crewed mission to Mars?
a.10s of kilograms.
b.100s of kilograms.
c.None, solar photons are all that is needed.
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d.A few grams
e.Millions of kilograms.: d.A few grams
9. What is normally not a part of a rocket?
a.Wings.
b.Payload.
c.Engines.
d.Propellant.
e.Oxidizer.: a.Wings.
10. What number of passengers/crew is generally felt to be the minimum nec-
essary for a successful interstellar trip?
a.1,000 - 10, 000
b.1 - 10
c.10,000 - 100,000
d.10 - 100
e.100 - 1,000: e.100 - 1,000
11. What part of an ion engine can be changed to enhance (increase) the exhaust
speed of the ions?
a.The number of electrons in the exhaust stream.
b.The amount of oxidizer available.
c.The area of the engine nozzle.
d.The hollow cathode diameter.
e.The voltage of the discharge optics.: e.The voltage of the discharge optics
12. Combustion is a(n)
a.Matter - anti-matter process.
b.Chemical process.
c.Component of solar propulsion.
d.Atomic fission process.
e.Ion exchange process.: b.Chemical process.
, UCA-5 Practice
Study online at https://quizlet.com/_hmbo3v
13. For a liquid fuel propulsion system, what is typically needed?
a.A reinforced fuel tank that connects to a combustion chamber.
b.A large mass of inert gas such as argon or xenon.
c.Fuel and oxidizer tanks connecting to a combustion chamber.
d.A large, low mass, highly reflective mylar sheet.
e.A large array of solar panels to generate electrical power.: c.Fuel and oxidizer tanks
connecting to a combustion chamber.
14. Of the various methods for propelling a spacecraft reviewed in this course,
which does not involve ejecting material at high velocity to generate thrust?
a.nuclear thermal propulsion
b.matter-anti-matter propulsion
c.solar sailing
d.chemical propulsion
e.ion propulsion: c.solar sailing
15. The first spacecraft that utilized successfully ion propulsion in deep space
(between the planets) was
a.Apollo 11.
b.Kepler.
c.New Horiz0ons.
d.Deep Space 1
e.Voyager 1.: d.Deep Space 1
16. Spacecraft sterilization procedures were initially created to protect the envi-
ronment of which solar system object?
a.Earth
b.The Sun
c.Our Moon
d.Jupiter
e.Mars: e.Mars
Study online at https://quizlet.com/_hmbo3v
1. The Dawn spacecraft was able to visit 2 solar system objects because of its ion
engines. Which objects were these?
a.Our Moon and Mars.
b.Mercury and Venus.
c.Mars and Jupiter.
d.Vesta and Ceres.
e.Jupiter and Saturn.: d.Vesta and Ceres.
2. Which spacecraft will never leave the solar system and venture into interstel-
lar space?
a.Voyager 1.
b.Voyager 2.
c.Pioneer 10.
d.Pioneer 11.
e.Deep Space 1.: e.Deep Space 1.
3. Have any spacecraft ever left the solar system?
a.yes, Pioneers 10 & 11 and Voyagers 1 & 2
b.yes, only Pioneers 10 & 11
c.no spacecraft have ever left the solar system
d.yes, only New Horizons that first visited Pluto
e.yes, only Voyagers 1 & 2: a.yes, Pioneers 10 & 11 and Voyagers 1 & 2
4. Telecommunication satellites are most often located in which orbits?
a.MEO
b.HEO
c.GEO
d.GSO
e.Lunar: c.GEO
5. Based upon the recent young galaxy observations of the James Webb Space
Telescope, what is an important conclusion that can be drawn?
, UCA-5 Practice
Study online at https://quizlet.com/_hmbo3v
a.Both young galaxies are located in the well developed Abell 2744 cluster.
b.Both young galaxies have appreciable spiral structure.
c.Both young galaxies have appreciable size and structure.
d.Both young galaxies have evidence of supernovae explosions
e.Both young galaxies have appreciable blue colouration and spherical
shapes..: c.Both young galaxies have appreciable size and structure.
6. Forward contamination:
a.occurs just after liftoff of a rocket as it passes through the lower Earth's
atmosphere.
b.is when a spacecraft payload is integrated with the upper stage of the rocket.
c.refers to the possibility of contaminating other worlds with terrestrial organ-
isms.
d.refers to the possibility of contaminating other Earth with alien organisms.
e.arises during fuel loading of a rocket, specifically the ozidizer.: c.refers to the
possibility of contaminating other worlds with terrestrial organisms.
7. Solar panels on a spacecraft
a.are usually very small in area especially when travelling in the outer solar
system.
b.provide the electricity that powers the systems (computers, science instru-
ments, etc.).
c.can only be used successfully when flying towards the Sun.
d.allow the RTGHS to operate efficiently.
e.create drag which allows the spacecraft to maneuver in space.: b.provide the
electricity that powers the systems (computers, science instruments, etc.).
8. It is estimated that if a matter - anti-matter propulsion system could be
created, it would take how much "fuel" for a crewed mission to Mars?
a.10s of kilograms.
b.100s of kilograms.
c.None, solar photons are all that is needed.
, UCA-5 Practice
Study online at https://quizlet.com/_hmbo3v
d.A few grams
e.Millions of kilograms.: d.A few grams
9. What is normally not a part of a rocket?
a.Wings.
b.Payload.
c.Engines.
d.Propellant.
e.Oxidizer.: a.Wings.
10. What number of passengers/crew is generally felt to be the minimum nec-
essary for a successful interstellar trip?
a.1,000 - 10, 000
b.1 - 10
c.10,000 - 100,000
d.10 - 100
e.100 - 1,000: e.100 - 1,000
11. What part of an ion engine can be changed to enhance (increase) the exhaust
speed of the ions?
a.The number of electrons in the exhaust stream.
b.The amount of oxidizer available.
c.The area of the engine nozzle.
d.The hollow cathode diameter.
e.The voltage of the discharge optics.: e.The voltage of the discharge optics
12. Combustion is a(n)
a.Matter - anti-matter process.
b.Chemical process.
c.Component of solar propulsion.
d.Atomic fission process.
e.Ion exchange process.: b.Chemical process.
, UCA-5 Practice
Study online at https://quizlet.com/_hmbo3v
13. For a liquid fuel propulsion system, what is typically needed?
a.A reinforced fuel tank that connects to a combustion chamber.
b.A large mass of inert gas such as argon or xenon.
c.Fuel and oxidizer tanks connecting to a combustion chamber.
d.A large, low mass, highly reflective mylar sheet.
e.A large array of solar panels to generate electrical power.: c.Fuel and oxidizer tanks
connecting to a combustion chamber.
14. Of the various methods for propelling a spacecraft reviewed in this course,
which does not involve ejecting material at high velocity to generate thrust?
a.nuclear thermal propulsion
b.matter-anti-matter propulsion
c.solar sailing
d.chemical propulsion
e.ion propulsion: c.solar sailing
15. The first spacecraft that utilized successfully ion propulsion in deep space
(between the planets) was
a.Apollo 11.
b.Kepler.
c.New Horiz0ons.
d.Deep Space 1
e.Voyager 1.: d.Deep Space 1
16. Spacecraft sterilization procedures were initially created to protect the envi-
ronment of which solar system object?
a.Earth
b.The Sun
c.Our Moon
d.Jupiter
e.Mars: e.Mars
