SWP Satellite Operations & Space Weather Effects 1

Question 1

Which space weather phenomenon is most responsible for increased satellite drag in low Earth orbit?

Accepted Answer

Solar EUV heating of the upper atmosphere

Answer

Solar EUV radiation heats and expands the upper atmosphere during active periods, increasing atmospheric density and drag on LEO satellites.

Question 2

What is the primary risk of single-event upsets (SEUs) on satellite electronics during space weather events?

Accepted Answer

Bit flips caused by energetic particle strikes

Answer

SEUs occur when high-energy particles strike semiconductor memory cells, flipping bits and potentially corrupting data or commands.

Question 3

During a major solar energetic particle (SEP) event, operators typically command satellites to enter 'safe mode' primarily to:

Accepted Answer

Protect sensitive electronics from radiation damage

Answer

Safe mode reduces the number of active electronic components exposed to damaging radiation during SEP events.

Question 4

The Starfish Prime nuclear test in 1962 is notable in space weather history because it:

Accepted Answer

Created an artificial radiation belt that damaged multiple satellites

Answer

The high-altitude detonation injected energetic electrons into near-Earth space, forming an artificial radiation belt that degraded or destroyed several satellites.

Question 5

Which orbital regime is most susceptible to radiation damage from trapped particles in the Van Allen belts?

Accepted Answer

Medium Earth orbit at ~20,000 km

Answer

Medium Earth orbit passes through the heart of both the inner and outer Van Allen radiation belts, exposing satellites to intense trapped particle fluxes.

SWP - Space Weather Professional Certification Exam Practice Test

SWP - Space Weather Professional Certification Exam Practice Test

SWP Satellite Operations & Space Weather Effects 1