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 ____. We have day and night because the Earth rotates on its ____. A day on Earth lasts ____ hours. A year on Earth lasts 365.25 days, which means that every 4 years we have a ____ year. The time taken for the Earth to rotate on its axis it is called the ____. Our Sun is a ____. Our Sun is ____ which means it generates its own light. A ____ is a group of stars that are named because they make a particular shape. An object that orbits a planet is called a ____. Satellites are held in their orbit by ____. The moon is an example of a ____ satellite, whilst the international space station is an example of a ____ satellite. Man-made satellites can be used in different ways and are called polar satellites or geostationary satellites. A ____ satellite is one that appears to remain stationary (or still) above the Earth, since is travels around the Earth at the same speed that the Earth is spinning. Uses of geostationary satellites include ____ (for example providing signal for mobile phones) or for ____ (such as GPS signals). A ____ satellite travels around the Earth at a different speed to the Earth and orbits it from pole to pole gathering huge amounts of data from all over the world. This is very useful for predicting the ____ as well as being a useful means for ____ on things that are happening in other parts of the world to where we are.

Constellations

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