Science

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****What is Energy?****
We are constantly using energy. We use it to power machines, cars and other transport. We use it to heat and cool our homes. And we use it to produce electricity for lights and other appliances in our homes, schools and businesses. We use more and more energy in our daily lives. In the last hundred years our energy use has more than doubled. People use more electricity, travel more, and use hundreds of appliances that make our lives easier. But where does all this energy come from? Most energy we use comes from burning __[|fossil fuels]__, such as __[|coal]__, __[|oil]__ and gas. The rest of the energy we use around the world comes from__[|nuclear]__ reactors and __[|hydroelectric]__ power, or from other __[|renewable energy]__sources, like the wind and the sun.

 What is a Food Chain?
 All living things need food to give them the energy to grow and move. A food chain shows how each living thing gets its food. **It shows who is eating who**. The arrow means "is eaten by". Grass is eaten by Grasshopper is eaten by  Toad is eaten by  Snake is eaten by  Hawk
 * [[image:http://www.woodlands-junior.kent.sch.uk/Homework/images/foodchains/gra.jpg width="143" height="107"]] || [[image:http://www.woodlands-junior.kent.sch.uk/Homework/images/foodchains/grasshopp.jpg width="136" height="106"]] || [[image:http://www.woodlands-junior.kent.sch.uk/Homework/images/foodchains/to.jpg width="150" height="100"]] || [[image:http://www.woodlands-junior.kent.sch.uk/Homework/images/foodchains/sn.jpg width="132" height="89"]] || [[image:http://www.woodlands-junior.kent.sch.uk/Homework/images/foodchains/ha.jpg width="116" height="109"]] ||
 * Grass > || Grasshopper > || Toad > || Snake > || Hawk ||

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