Wave Properties

Question 1

All waves can be reflected, [ ] and [ ]

Answer 1

reflected, refracted and diffracted

Question 2

When waves arrive at an obstacle/new material, their [ ] can be changed

Answer 2

direction of travel

Question 3

[ ] of light is what allows us to see objects

Answer 3

Reflection

Question 4

When light travelling in the same direction reflects from an [ ] surface, the light reflects at different [ ].

Answer 4

uneven

angles

Question 5

When light travelling in the [ ] reflects from an even surface, then it’s all reflected at the same [ ] and you get a [ ]

Answer 5

same direction
angle
clear reflection

Question 6

What is the law of reflection?

Answer 6

Angle of Incidence = Angle of reflection

Question 7

Describe the reflection in a mirror. (Image)

Answer 7

1) The image is the same size as the object
2) It’s as far behind the mirror as the object is in front
3) Virtual and upright
4) Laterally inverted - the left and the rights sides are swapped

Question 8

Why is an image in a mirror virtual?

Answer 8

Because the object appears to be behind the mirror

Question 9

What are the steps to drawing a reflection ray diagram? (4)

Answer 9

1) Draw the virtual image. (eg, + | + )
2) Draw a reflected ray from the top of the virtual image to the top of the eye. (Bold in front of mirror, dotted behind)
3) Draw the incident ray going from the top of the object top the mirror (to where the reflected ray hits the mirror)
4) Do steps 2 and 3 again from the bottom of the eye.