Burning peanuts

This task is about your understanding of carrying out science investigations.

A group of students carried out an experiment to heat water using the energy from a burning peanut.

This is a diagram of their experiment.

burning-peanut.png

Question 2Change answer

They found that the temperature of the water rose by 20°C.
 
a)   What are three ways they could change this experiment to get a greater temperature increase?

Question 2Change answer

The students decided to repeat the experiment to compare the temperature increase they would get from burning a biscuit.
 
b) To make this a fair test what are the two most important experimental conditions that should be kept the same?