KIT: Gas solubility demonstration : the baby bottle experiment- An unopened can of soda feels very solid because more than three volumes of dissolved carbon dioxide gas create a pressure of about 55 PSI above the liquid. This is about four times atmospheric pressure. Fill a baby bottle with soda, secure with a rubber nipple without a hole, and shake. Watch the nipple expand as the gas comes out of solution. Amazing to see! Great for teaching Henry's Law of Partial Pressures.
KIT:If you place a lighted piece of paper inside the milk bottle and then place a [hardboiled] egg on top of the bottle, the fire goes out and the egg is mysteriously pushed into the bottle, whole! A perfect demonstration of warm air expanding, and cool air contracting - it's the cooling of the heated air inside the bottle that allows the atmosphere to "push" the egg inside.
Gr.5-7 : People and planet -- Environmental engineers at work -- Early engineers -- Sustainable development -- Environmental problem solving -- Field-testing -- Risk assessments -- Changing approaches -- Meeting the energy challenge -- Safe water -- Design challenge : desalination project -- Preparing for tomorrow -- So you want to be an environmental engineer?
What is matter? -- All about elements -- Properties -- Ions -- Compounds -- Mixtures -- Same or different? -- Alloys -- Colloids -- Solutions -- Getting the solution -- More solutions -- Separating solutions. Suggested for grades 3 to 6.
Atoms and molecules -- Behavior of gases -- Behavior of liquids -- Solids and crystals -- Density and floating -- Heat as energy -- Producing heat -- Hotness and temperature -- Latent heat -- Expansion of fluids -- Boiling and evaporation -- Expansion of solids -- Solids into liquids -- Conduction, convection, and radiation -- Radiators and absorbers -- Effects of cooling -- Pressure on gases -- Pressure on liquids -- Flowing liquids.
KIT: Polymer Bead Demo - This demo starts when an end of a 50-ft length of beaded chain is pulled over the edge of its container. As the end falls and accelerates, the chain rises higher than the rim and seems suspended in the air. Students see this as a discrepant event. They will ask to see it again and again. This demo is great for explaining self-siphoning polymers.
KIT: Steve Spangler's soda bottle science: cartesian divers:Learn about the origin of the Cartesian Diver and how it works in Steve Spangler's Soda Bottle Science book. Filled with dozens of illustrations, this book teaches you how to make more than 20 variations on the classic Cartesian Diver.
This dual scaled (940-1060 millibars and 700/800 millimeters) barometer features moveable pointer, bold black markings in strong case, a keyhole mounting in the back, and easily read scales. Useful for predicting shifts in weather as predicted by local atmospheric pressure changes.
KIT:Students gain real understanding of atmospheric pressure when they try to pull apart these two specially designed rubber suction cups. Affordable demonstrator requires no vacuum pump.
KIT:Use this beautiful glass globe to teach your students about the amazing properties of air pressure. Simply stretch the neck of the balloon over the mouth of the bottle and blow into the balloon. Once it's inflated, insert the rubber stopper into the hole at the bottom of the bottle. The balloon remains inflated though nothing seems to be stopping the air from escaping! A great starter for atmospheric pressure discussions.
KIT:Ask students to determine the density of 15, identical looking, black plastic specimens of various sizes. Results will vary (hopefully)! When mass vs. volume is plotted for our Density Mystery Set, two lines with different slopes result. Although they look the same, this set is comprised of two different plastics, one with a density of 1.1 and the other with a density of 1.4. At the conclusion of the lesson, the pieces can be dropped into salt-water... seven sink and eight float.
KIT: Viscosity of oil tubes :By timing the fall of a sphere through different known grades of oil, the student can construct a time vs. viscosity graph. This graph is then used to determine the viscosity of an unknown oil. The set of five tubes of oil are sealed with both steel and Teflon spheres.