1.1. These sentences are about astronomy.

The Earth is an astronomical object.

One astronomical object smaller than the Earth is ............................ .

Two astronomical objects larger than the Earth are ........................... and ........................... .

The Milky Way is the name given to our ............................ .

Complete the sentences by writing words in the blank spaces.

1.2. The diagram shows the path followed by a comet as it moves around the Sun.

A, B, C, D and E are points on the comet’s orbit.

(i) State the name of the force that causes the comet to orbit the Sun.

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(ii) At which of the points shown is the force on the comet greatest?

[1]

(iii) Draw an arrow at point D to show the direction of the force acting on the comet.

[1]

(iv) At which of the points shown does the comet have the greatest kinetic energy?

[1]