January 2011 Mock: Question 8

a) The main astronomical purpose of the Apollo space programme was to collect lunar soil and rock and for analysis.

b) 1) to analyse and monitor the structure of the moon's interior.
2) to monitor minute changes in the moon's gravity

c) The Earth was struck by a mars sized object called Theia which caused a large chunk of the earth to break off which was caught in the earth's orbit. This mass cooled and coalesced to form the moon.
d) 1) lack of water in the rocks on the moon's surface, similar to that of the rocks located in the earth's mantle.
2) a great amount of oxygen isotopes were found in moon rocks, almost identical to rocks on the earth.