We have seasons because the Earth orbits the Sun, and because the Earth is ____. During the Winter, the North pole is tilted ____ from the Sun. During the Summer, the North Pole is tilted ____ the Sun. The journey that the Earth makes around the sun is called an ____. The Earth takes 365 and a ____ days to orbit the Sun. This means that every ____ years we have an extra day which is called a ____ year. One complete rotation of the Earth on its axis takes ____ hours. This is how long one full day is on Earth. A ____ is a group of stars that are named because they make a particular shape. ____ are objects that orbit planets. A natural satellite is the ____. A man made satellite is the ____. Man made satellites can be ____ which means they orbit the earth on their own path, or they can be ____ which means they move around the Earth at the same speed as the Earth spins, and so appear to stand still above the Earth. Our Sun is a ____. We can see the ____ because it is ____ which means it generates its own light. We can see the moon, Venus and the international space station at night because they ____ light from the Sun.

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