Required Practicals Paper 2

• stretching a spring

• acceleration

• ripple tank

• waves in a solid

• infrared

It is important for each of the required practicals you know the method very well and can identify the variables. You are likely to get longer 6 mark questions on the required practicals.

• Independent variable = what is changed in the practical

• dependent variable = what is measured in the practical 

• control variable  = what is kept the same in the practical