04. Reflector

What is the relationship between the angle of incidence and the angle of reflection on a plane mirror?

http://o.canada.com/

Activity - make a copy of these details selecting the correct words from the list or filling in the blancs as appropriate. You will need to hand draw the graph on graph paper.

Prediction

I think the angle of reflection will be (smaller than/greater than/the same as) the angle of incidence.

Method

Fill in the gaps in these sentences, using words from the box below.

I will find out what the relationship is between the angle of incidence and the angle of _________________________________.

I will do this by shining a ray of _________________________________ onto the mirror. I will then measure the angles on

each side of the _________________________________ line. I will repeat the experiment by changing the size of the angle

of _________________________________ and measuring the size of the angle of reflection.

Recording your results

Draw a line graph to show your results. Draw a line of best fit so that any errors are not included on the line. You will need to draw axes like this.

Considering your results/conclusion

I noticed that the angle of incidence is (larger than/equal to/smaller than) the angle of reflection

Can you...

> make accurate measurements of angles

> record your results

> draw a conclusion from your results