Exam (elaborations)
GCSE ASTRONOMY 2021
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GCSE ASTRONOMY, PAPERPROVIDER
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Please check the examination details below before entering your candidate informationCandidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
Level 1/Level 2 GCSE (9–1)
Time 1 hour 45 minutes
Paper
reference 1AS0/01
Astronomy
PAPER 1: Naked-eye Astronomy
You must have: Total Marks
Formulae and Data Sheet (enclosed)
Calculator, ruler
Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
• Calculators may be used.
• You must showmayall NOT
Any diagrams be accurately drawn, unless otherwise indicated.
• the end of your solution.
your working out with your answer clearly identified at
Information
• The total mark for this paper is 100.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Checkanswer
Try to every question.
• Good luck
your answers if you have time at the end.
• with your examination.
Turn over
*P65425A0132*
P65425A
©2021 Pearson Education Ltd.
1/1/1/1/1/1/1/1/1
, Formulae and Data Sheet
Formulae
Equation of Time = Apparent Solar Time (AST) – Mean Solar Time (MST)
T 2 = a constant
Kepler’s 3rd law:
r3
fo
Magnification of telescope: magnification =
fe
Distance modulus formula: M = m + 5 – 5 log d
λ − λ0 v
Redshift formula: =
λ0 c
Hubble’s law: v = H0 d
Data
Mass of Earth 6.0 × 1024 kg
Mean diameter of Earth 13 000 km
Mean diameter of Moon 3500 km
Mean diameter of Sun 1.4 × 106 km
One Astronomical Unit (AU) 1.5 × 108 km
Mean Earth to Moon distance 380 000 km
One light year (l.y.) 9.5 × 1012 km
One parsec (pc) 3.1 × 1013 km = 3.26 l.y.
Sidereal day of Earth 23 h 56 min
Synodic day of Earth 24 h 00 min
Temperature of solar photosphere 5800 K
Hubble Constant 68 km/s/Mpc
Speed of light in vacuum 3.0 × 108 m/s
2
*P65425A0232*
, Sidereal Mean
Type of Mean distance Diameter Mass/ Ring
Name period/Earth temperature Moons
body from Sun/AU /1000 km Earth mass systems
year /°C
Mercury planet 0.38 0.24 170 4.9 0.055 no none
Venus planet 0.72 0.62 470 12.1 0.82 no none
Earth planet 1.0 1.0 15 12.8 1.00 no 1: the Moon
2 small moons: Deimos and
Mars planet 1.5 1.9 −50 6.9 0.11 no
Phobos
dwarf
Ceres 2.8 4.6 −105 0.95 1.5 × 10−4 no none
planet
4 major moons: Ganymede,
Jupiter planet 5.2 11.9 −150 143 318 yes Callisto, Europa, Io
>60 others
5 major moons: including
Saturn planet 9.5 29.5 −180 121 95 yes Titan, Iapetus
>55 others
5 major moons: including
Uranus planet 19.1 84.0 −210 51 15 yes Titania, Oberon
>20 others
*P65425A0332*
1 major: Triton
Neptune planet 30.0 165 −220 50 17 yes
>12 others
dwarf 1 major: Charon
Pluto 39.5 248 −230 2.4 2.2 × 10−3 no
planet >4 other moons
dwarf
Haumea 43.1 283 −241 1.4 6.7 × 10−4 no 2
planet
dwarf
Eris 67.8 557 −230 2.3 2.8 × 10−3 no at least 1
planet
3
Turn over
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 Figure 1 shows a group of seven bright stars in the night sky.
Figure 1
(a) (i) Label the position of the Pole Star in Figure 1. Use the label P.
(1)
(ii) Label the position of the star Arcturus in Figure 1. Use the label A.
(1)
4
*P65425A0432*
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