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ENERGY: TRANSFER & FORCES, continued
Heat Transfer Kit
Students fill one insulated container with hot water and the other with cold water. Then they link the two containers with an aluminum heat transfer bar. Students record the temperature change of the water in the cups over time and relate the change to the associated heat transfer. Purchase one for use as a class demonstration or one for each laboratory group.
AP4536 I $26.65
Breaking Board Paradox— Demonstration Kit
Simple, yet very dramatic. A thin white pine stick is placed over the edge of a table.
A sheet of tissue paper is placed over the stick and spread out on the table. When the overhanging portion of the stick is hit sharply with a hammer, it breaks. The other end of the stick remains stationary, and the paper is not torn. The large surface area of the tissue paper provides 15 psi of pressure resisting the movement of the stick. When struck,
the stick cannot withstand the pressure
and breaks. Students will be amazed at the results. Enough materials are provided for 10 demonstrations.
AP4713 I $29.60 FLINN SCIENTIFIC I ENERGY: TRANSFER & FORCES
Heat Convection in Fluids— Demonstration Kit
These two innovative demonstrations let you create visible convection currents in both water and air. Dramatically show the effect of convection currents in air with a lighted candle. Follow this up by observing convection currents created when a hot colored liquid rises and a cool clear liquid sinks. Includes comprehensive Teacher Notes for relating these phenomena to real-world convection patterns, such as weather and ocean currents.
AP7207 I $31.30
Cartesian Diver Construction— Super Value Kit
Students learn the relationship between pressure and air volume and how air volume acts to regulate buoyancy by constructing Cartesian divers made of simple equipment and materials. Procedures for constructing 11 different types of Cartesian divers are provided in a detailed write-up. Super Value Kit is complete with 100 pipets and hex nuts. Requires water and two-liter soda bottles. Includes Flinn Exclusive STEM Integration Guide!
Bottomless Bottle—
Pascal’s Law Demonstration Kit
Dramatically demonstrate Pascal’s law of equal pressure and the incompressibility of fluids. Fill a glass bottle with water. Firmly grip the neck of the bottle, give the top
of the bottle a whack with a rubber mallet and—Pop! The bottom of the bottle drops out. The small force applied to the water in the narrow neck of the bottle becomes a much larger force on the bottle’s wider bottom—Pascal’s law in action!
AP6643 I $31.05
Centripetal Force
Demonstrate the relationship between angular velocity and centripetal accelera- tion. The low cost and simple construction of the centripetal force apparatus make it a must for every classroom. The experiment uses the weight of 20 washers hanging from one end of a nylon thread to balance the pull of a rubber stopper swinging overhead. Complete instructions provided. Classroom set is for 8 groups of students.
AP9164 I Individual Kit I $9.75 AP7272 I Classroom Set I $67.80
AP9082 I $32.65
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