Leanne had four rods, each made from a different metal. She wanted to find out which metal
was the best conductor of heat. The diagram shows some of Leanne's equipment.
hot water
metal container
metal ball stuck
on with wax
brass rod
copper rod
lead rod
Iron rod
(a)
Leanne's results are shown in the table.
metal rod time for metal ball to drop off (seconds)
36
brass
24
copper
lead
246
iron
132
What measuring equipment did Leanne use to get her results?
. 1 mark