ISP 205 FINAL PRACTICE EXAMINATION 2026 QUESTIONS
WITH ANSWERS GRADED A+
● Event Horizon. Answer: Boundary around a black hole beyond which escape is impossible
● Light Year. Answer: Distance light travels in one year, approximately 9.46 trillion km
● Inflation. Answer: Rapid exponential expansion of the early universe
● Kuiper Belt. Answer: Region beyond Neptune containing icy bodies
● Frequency. Answer: Number of wave cycles passing a point per second
● Absorption Spectrum. Answer: Dark lines produced when cool gas absorbs specific
wavelengths
● Galactic Center. Answer: Core of the Milky Way, location of Sagittarius A*
● Electromagnetic Spectrum. Answer: Full range of radiation from radio waves to gamma
rays
● Absolute Magnitude. Answer: Intrinsic brightness of a star at a standard distance of 10
parsecs
● Type II Supernova. Answer: Core-collapse explosion of a massive star
● Black Hole. Answer: Region where gravity is so strong that nothing can escape
● Chandrasekhar Limit. Answer: Maximum mass of a white dwarf, about 1.4 solar masses
● Hydrogen Burning. Answer: Fusion of hydrogen into helium in a star's core
● Redshift. Answer: Lengthening of wavelength as a source moves away from observer
● Redshift Survey. Answer: Mapping the universe by measuring galaxy redshifts
● Meteor. Answer: Streak of light caused by a meteoroid burning in the atmosphere
● Nuclear Fusion. Answer: Combining light nuclei to form heavier ones releasing energy
● Flat Universe. Answer: Universe with geometry described by Euclidean space
, ● Singularity. Answer: Point of infinite density at the center of a black hole
● Meteorite. Answer: Portion of a meteoroid that survives to reach Earth's surface
● Tidal Locking. Answer: When an object's rotation period equals its orbital period
● Astronomy. Answer: Scientific study of celestial objects and the universe
● Standard Candle. Answer: Object of known luminosity used to measure cosmic distances
● Parsec. Answer: Unit of distance equal to 3.26 light-years
● Supergiant Stars. Answer: Extremely luminous stars with very large radii
● Escape Velocity. Answer: Minimum speed needed to escape a body's gravitational pull
● Gamma Rays. Answer: Highest energy shortest wavelength electromagnetic radiation
● Cosmic Web. Answer: Large-scale structure of filaments walls and voids in the universe
● Radial Velocity Method. Answer: Detecting exoplanets by measuring star's Doppler
wobble
● Dark Energy. Answer: Mysterious energy driving the accelerating expansion of the
universe
● Terrestrial Planet. Answer: Rocky inner planet: Mercury Venus Earth Mars
● Quasar. Answer: Extremely luminous active galactic nucleus powered by a supermassive
black hole
● ISP 205. Answer: Introductory astronomy course covering the universe and its phenomena
● Doppler Effect. Answer: Change in observed wavelength due to relative motion
● Galaxy. Answer: Large system of stars gas dust and dark matter bound by gravity
● CNO Cycle. Answer: Carbon-nitrogen-oxygen fusion cycle in massive stars
● Proton-Proton Chain. Answer: Primary fusion reaction in lower-mass stars like the Sun
● RR Lyrae Star. Answer: Variable star used as distance indicator for globular clusters
● Big Bang. Answer: Model describing origin of the universe from a hot dense state
WITH ANSWERS GRADED A+
● Event Horizon. Answer: Boundary around a black hole beyond which escape is impossible
● Light Year. Answer: Distance light travels in one year, approximately 9.46 trillion km
● Inflation. Answer: Rapid exponential expansion of the early universe
● Kuiper Belt. Answer: Region beyond Neptune containing icy bodies
● Frequency. Answer: Number of wave cycles passing a point per second
● Absorption Spectrum. Answer: Dark lines produced when cool gas absorbs specific
wavelengths
● Galactic Center. Answer: Core of the Milky Way, location of Sagittarius A*
● Electromagnetic Spectrum. Answer: Full range of radiation from radio waves to gamma
rays
● Absolute Magnitude. Answer: Intrinsic brightness of a star at a standard distance of 10
parsecs
● Type II Supernova. Answer: Core-collapse explosion of a massive star
● Black Hole. Answer: Region where gravity is so strong that nothing can escape
● Chandrasekhar Limit. Answer: Maximum mass of a white dwarf, about 1.4 solar masses
● Hydrogen Burning. Answer: Fusion of hydrogen into helium in a star's core
● Redshift. Answer: Lengthening of wavelength as a source moves away from observer
● Redshift Survey. Answer: Mapping the universe by measuring galaxy redshifts
● Meteor. Answer: Streak of light caused by a meteoroid burning in the atmosphere
● Nuclear Fusion. Answer: Combining light nuclei to form heavier ones releasing energy
● Flat Universe. Answer: Universe with geometry described by Euclidean space
, ● Singularity. Answer: Point of infinite density at the center of a black hole
● Meteorite. Answer: Portion of a meteoroid that survives to reach Earth's surface
● Tidal Locking. Answer: When an object's rotation period equals its orbital period
● Astronomy. Answer: Scientific study of celestial objects and the universe
● Standard Candle. Answer: Object of known luminosity used to measure cosmic distances
● Parsec. Answer: Unit of distance equal to 3.26 light-years
● Supergiant Stars. Answer: Extremely luminous stars with very large radii
● Escape Velocity. Answer: Minimum speed needed to escape a body's gravitational pull
● Gamma Rays. Answer: Highest energy shortest wavelength electromagnetic radiation
● Cosmic Web. Answer: Large-scale structure of filaments walls and voids in the universe
● Radial Velocity Method. Answer: Detecting exoplanets by measuring star's Doppler
wobble
● Dark Energy. Answer: Mysterious energy driving the accelerating expansion of the
universe
● Terrestrial Planet. Answer: Rocky inner planet: Mercury Venus Earth Mars
● Quasar. Answer: Extremely luminous active galactic nucleus powered by a supermassive
black hole
● ISP 205. Answer: Introductory astronomy course covering the universe and its phenomena
● Doppler Effect. Answer: Change in observed wavelength due to relative motion
● Galaxy. Answer: Large system of stars gas dust and dark matter bound by gravity
● CNO Cycle. Answer: Carbon-nitrogen-oxygen fusion cycle in massive stars
● Proton-Proton Chain. Answer: Primary fusion reaction in lower-mass stars like the Sun
● RR Lyrae Star. Answer: Variable star used as distance indicator for globular clusters
● Big Bang. Answer: Model describing origin of the universe from a hot dense state
