Name ______Date______Block______

Water Olympics

Lab Data Sheet

Pre-Lab Instructions Define the following terms.

Event Results / Team Member One / Team Member Two
Event 1 (# pennies)
Event 2 (# drops)
Event 3
Description of boat movement / Without soap / With soap
Event 4
(# clips floating)
Event 5
(Reaction/ no reaction) / w/o H2O / w/ H20
Event 6 Diameter of bubble (cm)

1.  Cohesion:

2.  Adhesion:

3.  Surface Tension:

4.  Capillary Action:

Event #1: Pole Vaulting: Over the Top

Problem: How many pennies can be added to a beaker filled to the brim with water, before water spills over the edge?

Hypothesis:

Event #2: The Balance Beam: A Penny for your Thoughts

Problem: How many drops of water can fit on the surface of a penny before it spills over the edge?

Hypothesis:

Event #3: Sculling: Bubble Power

Problem: How will soap affect the movement of a foam boat in water?

Hypothesis:

Event #4: Backstroke: Clipping Along

Problem: How many paperclips can I get to float on the surface of a cup filled with water?

Hypothesis:

Event #5: The Necessary Ingredient

Problem: How does the presence of water influence the interactions between baking soda and cream of tartar?

Hypothesis:

Event #6: Bubble Rings

Problem: How large a bubble can I create in a pan full of bubble solution?

Hypothesis:

Discussion Questions

1.  What occurs when several water molecules are near each other in a droplet of water? (Hint: What forms between them?)

2.  Why could you add several pennies to the beaker of water before it spilled over in Event #1, despite the fact that it was filled to the brim from the start?

3.  Explain how cohesion and adhesion were at work as the water dome formed on your penny as you added drops in Event #2.

4.  The polarity of water was demonstrated in which event? Explain why this was so.

5.  What supported the paper clips as they balanced on the surface of the water (Event #4)?

6.  What property of water does Event 5 ‘The Necessary Ingredient demonstrates’? (Hint: Why is water necessary in our cells?)

7.  Why did your bubble from Event #6 eventually pop?