CAIE IGCSE Physics 6.1.1.3 It Takes Approximately One Month for Questions

Learn the Moon’s approximate orbital period and locate quarter and full Moon phases relative to Earth and the Sun.

Exam points

state that the Moon completes one orbit of Earth in about one month
identify quarter Moon positions from a Moon-position diagram
identify the full Moon position from the relative positions of Sun, Earth and Moon

[Maximum number: 3]

(a)

Fig. 10.1 represents different positions A-H of the Moon as it rotates around the Earth.

Fig. 10.1

[ 3 ]

(i)

State a position of the Moon where an observer on Earth sees:
1. there is a quarter Moon
2. there is a full Moon

[ 2 ]

(ii)

State the approximate time taken for the Moon to orbit the Earth.

time =..........................................................

[ 1 ]

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