REQUIRED PRACTICAL- Investigating waves

Question 1

WHAT IS THE AIM OF THE INVESTIGATION?

Answer 1

Make observations and record how suitable apparatus s at establishing relationship between frequency wavelength and wave speed

Question 2

WHAT IS THE INDEPENDENT VARIABLE?

Answer 2

Frequency as its the one you change

Question 3

WHAT IS THE DEPENDENT VARIABLE?

Answer 3

Wavelength as its the one you measure

Question 4

WHAT IS THE CONTROL VARIABLE?

Answer 4

Volume of water and size of tank

Question 5

WHAT EQUIPMENT DO YOU NEED?

Answer 5

-power pack wired to vibrating bar OR RULER
-ripple tank
-lamp
-paper
-ruler
-water

Question 6

EXPLAIN HOW YOU SET IT UP

Answer 6

Power pack wired to vibrating bar is placed in the suspended ripple tank, below is a piece of paper and above is a lamp Waves should form shadows on paper

Question 7

HOW TO CARRY OUT PRACTICAL?

Answer 7

Find wavelength by measuring the length of ten waves in metres and dividing it by ten
Find frequency by timing and counting how many waves pass a point in 10 seconds then divide by ten
Substitute into wave speed equation