Ice Meltdown
Watch as this process called
melting happens!💧
By:Lana Davis
Question
Does an ice cube melt
faster under a CFL
lightbulb or an
incandescent lightbulb?
Materials
•
Ice cubes x2
•
Light bulbs : incandescent and CFL
•
Black trays x2
•
Graduated syringe
•
Scale
•
Prediction
If one ice cube is placed under a
CFL lightbulb and another one
under an incandescent lightbulb,
then the CFL will make it melt
faster.
Procedure
•
Fill cup with 8 oz. of water
•
Add 10 drops of red and 3 drops of yellow food coloring
•
Fill graduated syringe full of 15 ml.
•
Fill all sections of ice tray with 15 ml. of orange water.
•
Place the tray in freezer until orange water is frozen
•
Place 1 cube on black tray
•
Place each tray under light
•
Check ice cubes every 5 minutes
•
Time it for 25 minutes to melt ice cubes
Results
Time
CFL
Inc.
After 0
73
74
After 5
75
80
After 10
75
82
After 15
75
83
After 20
76
84
After 25
76
84
As you can see, the temperatures increased slowly for the CFL by 3
degrees F. For the incandescent, the temperature increased faster, and
by the end it was 10 degrees F warmer.
Mass
CFL
Inc.
Starting
0.4 oz
0.4 oz
Ending
0.2 oz
0.2 oz
Even though there was a temperature difference between the
two bulbs, we could not detect a difference in the weight of
the cubes by the end of the experiment. Maybe the scale we
had was not precise enough.
Incandescent
CFL
Conclusion
•
MY PREDICTION WAS WRONG!
•
Based on the data I collected and the measuring
tool I used, CFL's do not cause the frozen water to
melt faster.
Future Questions
•
How long will it take to freeze back to a solid
ice cube?
•
Does an ice cube melt faster than a handful of
chocolate chips?
•
How long does it take to melt an ice cube on
top of an oven top?
•
How long does it take for an ice cube to fully melt?
•
How much does an ice cube weigh after being melted 1
minute with a hair dryer?