what is a fair test investigation? A fair test investigation is a controlled experiment which is carried out in order to test a hypothesis or a prediction about a certain event. A fair test only changes one variable and keeps all other variables constant.
we completed two experiments
does temperature effect the rate at which an ice cube melts ?
which material works best as an insulator ?
Ice Cube Investigation
Investigation no. 1 how long does an ice cube take to melt in a room temperature setting?
steps in the Investigation:
freeze water in a ice cube maker.
collect the frozen ice cubes.
place the ice cube into the chronicle flask.
use the timer to record the time it takes until the ice cube has completely melted in room temperature.
also record the time it takes for an ice cube to melt in a fridge.
The ice cube melted quickest in the room temperature setting.
It took longest to melt in the cold fridge setting
investigation 2 : which type of material will insulate Guzzlers hot chocolate?
steps in the investigation:
using a kettle, boil some water
measure the same amount of water, using a chronical flask and seperate into three different coffee cups
insulate 2 cups with tinfoil and cotton wool and secure with rubber bands, leave one cup insulation-free
record the temperature of each coffee cup with a thermometer at the beginning
continue recording the temperature every 2 minutes until you have reached a total of 10 minutes
compare results and conclude as to which material acted as the most effective insulator