The light makes you able to see everything because

every object can reflect light ,thats why we can see everything around us. Light travels in straight lines thats why when the light reglects of a mirrior it goes straight into our eyes.when you go on the road with a bike they recommend you to wear a bright colour so that the front or back car lights reflect on the colour so the driver can see you .unlikely,most people were black wich is dangerous because the car cant see that colour and the driver might have an accident .

FACT

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when you shut your eyes your eyes are use to the dark because you have shut them but when you open them the pupil gets smaller to let less light in thats why when its dark our pupil is big .When you suddenly open them they go small and then go big depending on the light.

the further the light source the bigger the shadow the nearer the light source the smaller the shadow this is because the object has longer distance from the light source so it makes the shadow bigger and because it has not that long distance to the light source the shadow is smaller.

a shadow is formed by the object blocking the light

By Ines

the position of the sun affects the shad if you have a tree and look at different times the shadow then they are different sizes