The temperature of the milk may have been affected during the time you
waited before you blew in the milk a second time when you originally did
the Better Bubbles experiment. If temperature affects bubblicity, then you
expect that milk at room temperature would have different bubblicity than
ice-cold milk. If temperature isn't important, then ice-cold milk and room
temperature milk would have about the same bubblicity.
How can you design an experiment to test this?
To test the effect of temperature on bubblicity, you'll need 4 cups,
4 straws and 2 shallow pans.
Place some ice water in one pan and some warm water in the other pan.
Put one cup of skim and one cup of whole in each pan.
Wait about 5 minutes and then blow.
How does the temperature of the milk affect its bubblicity? |
