Click here to download the catalog as a PDF file. To view this site you need Adobe Flash Player and your browser must allow javaScripts. Go here to get the latest Flash Player. Pressure & Fluids Student Vacuum Pumper and Chamber This affordable hand vacuum pump can be used with the specially designed chamber that has a wide mouth. Students can test the effects of reduced pressure on many different objects. P1-2140 Vacuum Pumper and Chamber P1-2160 Vacuum Pumper Classroom Set (Set includes 6 Vacuum Pumpers, 6 Vacuum Chambers, 6 temperature strips and activity sheets) ▲ $27 $169 ▲ Pressure Pumper pumps up the mass of air Demonstrate that air has mass (in a much more convincing way than the old two balloons on a meter stick method!). Use the Pressure Pumper to pump air into a 2-liter bottle. Then challenge your students to explain the resulting mass gain. Hands-on activities teach the relationship between pressure and temperature; adiabatic expansion and cloud formation; and finding the mass of air. Ideal for elementary/middle level students, each kit comes with 15 Pressure Pumpers, 15 Temperature Strips and three activity sheets. Bottle not included. P1-2060 P1-2050 P1-2060-02 Pressure Pumper Kit Individual Pressure Pumper Strip Thermometer $55 $3.25 $1.25 The wide-mouthed vacuum chamber can accommodate marshmallows and other large objects for student experiments. With our Pressure Pumper and temperature strip, you can easily demonstrate the relationship between pressure and temperature. Atmospheric Pressure Magdeburg Hemispheres In this economical version of the classic Magdeburg Hemisphere demonstration, students push two rubber cups together and find that it takes tremendous force to pull them apart. What holds them together? Just air! Two cups, 3 1/4" diameter, with instructions. P1-2005 Atmospheric Pressure Cups $10 Hand Boilers This energy transformation is sure to capture your students’ attention! Hold the glass vessel in your hand, and your body heat causes the liquid inside to appear to boil and shoot into the top bulb! Challenge students to explain the rapid change. Assorted colors and styles. P3-5005 Hand Boiler 12 or more $5 $4.50 Atmospheric Mat Cartesian Diver The Cartesian Diver is a classic science experiment which explores the properties of air. Air has weight, exerts pressure and can be squeezed and compressed. The Cartesian Diver demonstrates all three properties using hands-on experiments. Start with a two-liter plastic bottle filled with water. The diver will float and sink in the bottle when pressure is applied to the outside of the bottle. The Cartesian Diver is also a great way to demonstrate the concept of buoyancy. P1-2000 Single Cartesian Diver 10 or more $2.95 $2.75 $22 This “diver“ dramatically demonstrates three properties of air. A simple design that demonstrates a powerful concept: atmospheric pressure! Place this rubber mat on any flat surface and pull on the handle. It’s like the mat is glued down! Place it on a flat lab stool and you can lift the stool! A great way to show that suction cups stay stuck because of the pushing force of air, not from a pulling “suction” force. 10.5" x 10.5". P1-2010 Atmospheric Pressure Mat $21 This diver is dressed up like a colorful squid that sinks and swims in the water. favorite for demonstrating “Myatmospheric pressure Paul Hewitt – author, Conceptual Physics ” P1-2000-01 Super Diver Kit This kit contains enough material to make 30 plain Cartesian Divers. Bottle not included. To order visit arborsci.com 51