Lab Report

Topics: Oxygen, Thermodynamics, Water Pages: 3 (673 words) Published: March 6, 2015
Bubble Inside a Bubble
Materials









Granulated sugar (we had our best results using Imperial Sugar and Dixie Crystals) Dish soap
Water
Tablespoon
Scissors
Pipette
Cup
Adult supervision

Bubbles form because of a combination of water’s hydrogen bonds and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to, and surrounding, hydrogen-bonded water.

Solar Oven S’mores
Materials


Pizza box



Two clear sheet protectors



Black construction paper



Duct tape



Clear masking or packing tape



Box knife



Scissors



Thermometer (optional)



Wooden skewer



Glue stick (Elmer's glue will work, too)



Tin foil



Ruler



Pen

The Solar Oven is what is more widely known as a solar cooker and works on the principle of converting sunlight to heat energy and retaining the heat for cooking. To make the process work, you cover as much of the box as possible with reflective material in order to catch as much sunlight as possible. In this case, you are using tin foil. The cooking surface is black construction paper because it retains heat very well. If you've ever worn a black shirt on a sunny day, or sat down on the black seat of a car in the summer, you know that black surfaces absorb and retain a lot of heat. Ouch! As heat is retained, the air inside the oven also heats. Next thing you know, you're eating delicious, melt-in-your-mouth s'mores!

Rising Water Secret
Materials







Candle and matches
Pie pan or dish
Juice bottle, jar or clear vase
Water
Food coloring
Matches

The candle flame heats the air in the vase, and this hot air expands. Some of the expanding air escapes out from under the vase — you might see some bubbles. When the flame goes out, the air in the vase cools down and the cooler air contracts. The cooling air inside of the vase creates a vacuum. - See...
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