Summarising : (3 marks)Write a ‘Summary’ of the above extract by using the following points –Space companion — revolution — gravity — features.

Answer: A short summary (about one-third of the extract) with a title, covering all four points in the given order.

The Moon – Our Companion in Space

The moon, the earth’s satellite, is our closest companion in space and is so large that it is called the earth’s sister planet. It revolves round the earth at a distance of 3,53,000 to 4,05,500 km in about 27 days and 7 hours. This period varies because the gravity of the earth, the sun and other planets constantly acts on it. As it rotates and revolves in the same time, we always see only one side of it. It is small and light, with one-fourth of the earth’s diameter, 1/50th of its volume and 1/80th of its mass.