Lesson 6

Question 1

What are two dimensional waves

Answer 1

Waves that are able to move freely in two dimension, such as along the surface of a liquid (water waves)

Question 2

What is it called when the object disturbing the surface of the water is quite small

Answer 2

Point source

Question 3

Dropping a long straight stick into the water will generate a straight or a

Answer 3

Plane wave

Question 4

A long straight object that disturbs the surface of the water is referred to as a

Answer 4

Linear source

Question 5

Water waves tend to form long, continuous crests and troughs. In order to accurately represent a two dimensional wave in a diagram we typically draw a line that represents each crest. This is called

Answer 5

A wavefront

Question 6

When arrows are drawn to show the direction of the wave motion those arrows are called

Answer 6

Wave rays

Question 7

Wave rays are always _____ to the wave front

Answer 7

Perpendicular

Question 8

The imaginary line perpendicular to the reflecting surface is known as the

Answer 8

Normal

Question 9

The angle between the incident ray and the normal is called the

Answer 9

Incident angle

Question 10

The angle between the reflected ray and the normal is called the

Answer 10

The angle of reflection

Question 11

The law of reflection states that

Answer 11

The angle of incidence is always equal to the angle of reflection