Page 12 - Demo

SCIENTIFIC
PHYSICAL SCIENCE
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ENERGY
Conduction, Convection and Radiation—Activity-Stations Kit
Discover the basic principles of heat transfer with four hands-on experiments:
• Test the thermal conductivity of different materials, and compare results with known quantities.
• Investigate how temperature affects the density of a liquid, and watch as convection currents are created.
• Observe the dramatic effects of convection currents in air on a lighted candle.
• Explore heat transfer through radiation by measuring the temperature increases for two types of sand exposed to a heat source.
AP7183 I $73.20
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 $30.40
Ice Melting Blocks
Touch the identical-looking blocks. One feels cold to the touch, the other feels warm. Which block melts the ice faster—cold or warm? The result is unexpected! The cold block melts
the ice cube remarkably faster than the warm block. How is this possible? The cold block is a heat conductor. The warm block is an insu- lator. An unmistakable discrepant event that is sure to clarify the difference between a heat conductor and a heat insulator. Instructions provided. Blocks are 10 × 10 cm.
AP6488 I $25.75
Photon Solar Racer
The Photon Solar Racer can be built in one class period and raced in another. All that is required for assembly are scissors and a small screwdriver. The model will achieve very fast speeds in bright sunlight. Students will be amazed at the sensitivity of the car speed with slight variations in the amount of sunlight. After building the initial model, the key solar/ mechanical components can be used to power other cars of student design. Includes materials to build one Photon Solar Racer.
AP6060 I $33.50
Photogate Timer
Measure time to 0.0001 seconds with the easy-to-use Flinn PSWorksTM Photogate Timer. With five common function modes, it measures instantaneous and average object speed, pendulum periods, frequency of a rotating object, acceleration due to grav- ity and more. Timer stores 20 data points for repeated trials. Photogates clamp to all Flinn PSWorks equipment or can be used as stand-alone products. Two photogates, one timer, connector cords and AC adapter
are included.
AP6998 I $332.55
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