Question 9
Carlos investigates thermal conductivity.
Look at the diagram of his experiment.
Carlos records the time it takes for each metal ball to fall off each spoon.
**(a)** Write down **two** variables Carlos keeps the same to make his experiment fair.
1 ______
2 ______
Look at the diagram of his experiment.
Carlos records the time it takes for each metal ball to fall off each spoon.
**(a)** Write down **two** variables Carlos keeps the same to make his experiment fair.
1 ______
2 ______
