required practical

Question 1

What is the required practical called

Answer 1

Water waves

Question 2

What is it

Answer 2

• ripple tank
• contains a layer of water
• ripples are generated by a motor that is suspended above the tank on elastic bands so just touching the surface
• light above the tanks shines down through the water and so we can see the shadow of the ripples

Question 3

When you increase motor speed

Answer 3

The ripples become closer together

Question 4

When you decrease motor speed

Answer 4

Ripples become further apart

Question 5

How do you calculate

Answer 5

V=f x (llamda)