ISP 205 - Exam 1 2024/2025 Exam
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Astronomical Unit (AU) - 🧠ANSWER ✔✔The Earth's average distance from
the Sun (about 1 million km); we normally describe distances within our
solar system with this unit
Light-Year - 🧠ANSWER ✔✔The distance light can travel in one year (about
10 trillion km); we normally use this unit to describe the distances between
galaxies
23 hours, 56 minutes - 🧠ANSWER ✔✔The exact length of a day
Solar Day - 🧠ANSWER ✔✔The term for a day that lasts 24 hours
Day (24 hours/23h56m) - 🧠ANSWER ✔✔The amount of time it takes for
the Earth to rotate once around its axis
Month (~29 days) - 🧠ANSWER ✔✔The amount of time it takes for the
Moon to orbit around the Earth one full time
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,Year (365 days) - 🧠ANSWER ✔✔The amount of time it takes for the Earth
to complete one full orbit around the Sun
Speed of Light - 🧠ANSWER ✔✔300,000 km/s
Further back - 🧠ANSWER ✔✔The farther away we look in the distance, the
--- we look in time
Andromeda Galaxy - 🧠ANSWER ✔✔The --- is about 2.5 million light-years
from Earth, which means that we are seeing it as it was about 2.5 million
years ago
Alpha Centauri - 🧠ANSWER ✔✔The nearest star to our own solar system;
about 4.4 light-years away
Light-Second - 🧠ANSWER ✔✔The distance that light travels in one second
Distance from Earth to Sun - 🧠ANSWER ✔✔1 AU (93 million miles)
Distance from Earth to Moon - 🧠ANSWER ✔✔~384,400 km
Planet - 🧠ANSWER ✔✔A moderately large object that orbits a star and
shines primarily by reflecting light from its star; must orbit a star, be large
enough for its own gravity to make it round, and has cleared most objects
from its orbital path
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STATEMENT. ALL RIGHTS RESERVED
, Dwarf Planet - 🧠ANSWER ✔✔An object that orbits a star and has its own
gravity that makes it round, but has not cleared its orbital path
Pluto - 🧠ANSWER ✔✔Example of a dwarf planet
Jupiter - 🧠ANSWER ✔✔Planet in the Milky Way that has about 1/1,000 the
mass of the Sun
Star - 🧠ANSWER ✔✔A large glowing ball of gas that generates heat and
light through nuclear fusion in its core
Moon - 🧠ANSWER ✔✔An object that orbits a planet
Asteroid - 🧠ANSWER ✔✔A relatively small and rocky object that orbits a
star
Comet - 🧠ANSWER ✔✔A relatively small and ice-rich object that orbits a
star
Galaxy - 🧠ANSWER ✔✔A great island of stars in space, all held together
by gravity and orbiting a common center; a collection of solar/star systems
Constellation - 🧠ANSWER ✔✔A region of the sky with well-defined
borders; there are 88 official ones that cover the celestial sphere
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Questions and Detailed Answers | Get it
100% Correct Answers
Astronomical Unit (AU) - 🧠ANSWER ✔✔The Earth's average distance from
the Sun (about 1 million km); we normally describe distances within our
solar system with this unit
Light-Year - 🧠ANSWER ✔✔The distance light can travel in one year (about
10 trillion km); we normally use this unit to describe the distances between
galaxies
23 hours, 56 minutes - 🧠ANSWER ✔✔The exact length of a day
Solar Day - 🧠ANSWER ✔✔The term for a day that lasts 24 hours
Day (24 hours/23h56m) - 🧠ANSWER ✔✔The amount of time it takes for
the Earth to rotate once around its axis
Month (~29 days) - 🧠ANSWER ✔✔The amount of time it takes for the
Moon to orbit around the Earth one full time
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,Year (365 days) - 🧠ANSWER ✔✔The amount of time it takes for the Earth
to complete one full orbit around the Sun
Speed of Light - 🧠ANSWER ✔✔300,000 km/s
Further back - 🧠ANSWER ✔✔The farther away we look in the distance, the
--- we look in time
Andromeda Galaxy - 🧠ANSWER ✔✔The --- is about 2.5 million light-years
from Earth, which means that we are seeing it as it was about 2.5 million
years ago
Alpha Centauri - 🧠ANSWER ✔✔The nearest star to our own solar system;
about 4.4 light-years away
Light-Second - 🧠ANSWER ✔✔The distance that light travels in one second
Distance from Earth to Sun - 🧠ANSWER ✔✔1 AU (93 million miles)
Distance from Earth to Moon - 🧠ANSWER ✔✔~384,400 km
Planet - 🧠ANSWER ✔✔A moderately large object that orbits a star and
shines primarily by reflecting light from its star; must orbit a star, be large
enough for its own gravity to make it round, and has cleared most objects
from its orbital path
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, Dwarf Planet - 🧠ANSWER ✔✔An object that orbits a star and has its own
gravity that makes it round, but has not cleared its orbital path
Pluto - 🧠ANSWER ✔✔Example of a dwarf planet
Jupiter - 🧠ANSWER ✔✔Planet in the Milky Way that has about 1/1,000 the
mass of the Sun
Star - 🧠ANSWER ✔✔A large glowing ball of gas that generates heat and
light through nuclear fusion in its core
Moon - 🧠ANSWER ✔✔An object that orbits a planet
Asteroid - 🧠ANSWER ✔✔A relatively small and rocky object that orbits a
star
Comet - 🧠ANSWER ✔✔A relatively small and ice-rich object that orbits a
star
Galaxy - 🧠ANSWER ✔✔A great island of stars in space, all held together
by gravity and orbiting a common center; a collection of solar/star systems
Constellation - 🧠ANSWER ✔✔A region of the sky with well-defined
borders; there are 88 official ones that cover the celestial sphere
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
