Light always travels in straight lines.
If light hits an object on the path that it is travelling, it can reflect and enter our eyes. Then we see the object.
Light changes it direction when it is reflected by a surface. As it hits it, it bounces off the surface at the same angle.
Smooth, shiny surfaces can reflect light well.
E.g. – Mirrors and polished metals
Dull and dark surfaces cannot reflect light well.
E.g. – Dark objects
Reflective surfaces are surfaces which can reflect light. There are many ways that reflective surfaces can be very helpful.
These mirrors inside the car reflect light so that drivers can see objects behind them.
These things can help cyclists to be extra visible at night.
Cat’s eyes are very useful at night as they reflect light from car headlamps so that the driver see the road at night.