Exhibit 147

ASTL101 Assessment
APPENDIX 2
LAB QUESTIONS USED FOR QUANTITATIVE MEASUREMENTS
The following are the set of questions and answers from ASTL101 Labs used for this
assessment:
Laboratory OP1
Question 11. Does the comet move relative to the stars or does it remain stationary?
(Moving relative to the stars means that, as time moves on, the comet slowly
changes its position against those stars.)
Answer: The comet moves relative to the stars.
OP3
Question 21. a) What is the altitude of the North Celestial Pole for an observer at
the North Pole of the Earth?
b) What is the declination of the North Celestial Pole?
c) Does your answer to part b depend upon your observing location on the Earth?
d) Why or why not?
Answer: a) 90° b) 90° c) No d) Since declination uses the celestial equator rather
than the horizon as reference plane, the declination of the North Celestial Pole does
NOT change when an observer changes location on the Earth.
OP10
Question 35: Notice that the horizon does not get in the way at any time during this
sequence. (That is, the Earth always remains in about the same position in the lunar
sky). Can you explain why?
Answer: The Moon’s rotational period is the same as its orbital period, and so the
Earth will remain in approximately the same position in the lunar sky throughout its
Orbit.
OP15
Question 14: From your answers to the above questions, is there any clear
synchronicity between the orbital periods of Io, Europa, and Ganymede? Explain
your answer (don't just answer yes or no).
Answer: The orbital periods of the satellites Io, Europa, and Ganymede are in the
ratio 1:2:4 if your data above was correct. If one or more of your measurements
were incorrect, I looked at this answer by hand to determine whether you should
have answered this yes or no.
Mass of Earth
Question 16: Would T (period of pendulum) be larger or smaller on the Moon?
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