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Summary Edexcel GCSE Astronomy Exam Questions and Answers (Latest 2025)
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Edexcel GCSE Astronomy Exam QuestionsEdexcel GCSE Astronomy Exam Questions and Answers (Latest 2025) and Answers (Latest 2025)
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Edexcel GCSE Astronomy ExamQuestions and Answers (Latest 2025)
Latitude - Correct Answer ✅ The angular distance north or
south of the equator, defined by lines of xxxxxxx or parallels.
Longitude - Correct Answer ✅ The angular distance east or
west of the Prime Meridian, defined by lines of xxxxxxxx, or
meridians.
Prime Meridian - Correct Answer ✅ The meridian,
designated at 0° longitude, which passes through the Royal
Observatory at Greenwich, England.
Declination - Correct Answer ✅ The angular distance of a
point north or south of the celestial equator. North is positive
(+) South is negative (-). Measured in degrees, arc minutes (')
and arc seconds ('').
Celestial Sphere - Correct Answer ✅ An imaginary sphere
of which the observer is the center and on which all celestial
objects are considered to lie.
,Edexcel GCSE Astronomy Exam
Questions and Answers (Latest 2025)
Zenith - Correct Answer ✅ The point in the sky or celestial
sphere which is directly above an observer.
Right Ascension (RA) - Correct Answer ✅ The distance
Eastwards along the Celestial equator. Measured in hours,
minutes and seconds.
Polar Distance - Correct Answer ✅ 90 degrees - declination
Oblate Spheroid - Correct Answer ✅ shape of the earth, an
imperfect sphere
The mean diameter of Earth - Correct Answer ✅ 13,000 km
Crust - Correct Answer ✅ the outer layer of Earth,
relatively thin, split into tectonic plates
Continental crust - Correct Answer ✅ consists of low-
density rocks, mainly granite.
,Edexcel GCSE Astronomy Exam
Questions and Answers (Latest 2025)
Oceanic crust - Correct Answer ✅ consists of denser rocks
e.g. basalt
Sidereal Day - Correct Answer ✅ the time for one complete
rotation of the earth relative to a particular star, 23 hours 56
minutes
Solar/Synodic Day - Correct Answer ✅ the time interval
between when the Sun is directly overhead and is exactly 24
hours, because the Earth orbits the sun
Local Sidereal Time (LST) - Correct Answer ✅ the right
ascension of a star on an observers meridian
Hour Angle - Correct Answer ✅ The time since an object
last crossed your meridian. xxxx xxxxx is the Local Sidereal
Time - Right Ascension
Azimuth - Correct Answer ✅ A bearing eastwards to the
point on an observers horizon, directly beneath the star
, Edexcel GCSE Astronomy Exam
Questions and Answers (Latest 2025)
Altitude - Correct Answer ✅ The angle between an
observers horizon and the star.
Zodiacal Band - Correct Answer ✅ A region of the sky 8
degrees North and South of the ecliptic. Where the planets lie
Upper transit - Correct Answer ✅ When an object
culminates
Altitude of a star at culmination/ upper transit - Correct
Answer ✅ Latitude + Polar distance
Altitude of a star at lower transit - Correct Answer ✅
latitude - polar distance
Circumpolar stars - Correct Answer ✅ stars that do not set
below an observers horizon
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