# SAPS Science Club Activities

Bang Goes the Theory - Hands-on science: Water bottle rockets science for hobbyist, students, and teachers of all ages. Q: How much water do you put in a water rocket? A: The simple answer is something less than half full. Since the compressed air stores the energy, and the water provides momentum, both are needed. Fill perhaps 40-50% of the motor volume with water. We call this the Load Fraction. The longer answer is, it depends. The following factors effect how much water is optimal: Empty weight of the rocket, cross-sectional area (or diameter) of the rocket, nozzle diameter, operating pressure, and drag coefficient. So how do I determine the optimal load fraction? By conducting experiments, we are rocket scientists after all! Is there another way? Yes, conduct your experiments using a water-rocket simulator like our java-based applet. (back)

Interactive Whiteboard Resources: Science, Key Stage 2 Energy Town Here you can find out where energy comes from, how to be energy efficient and why saving energy is so important. It looks at simple circuits and how energy gets to the home as well as how to stay safe round electricity. Changing Circuits An interactive whiteboard teaching activity which looks at the use of switches and how to make lights dimmer and brighter. Circuits and Conductors Circuit activities where you can a range of materials to see if you can complete a circuit. Learning Circuits Online activities on electricity, circuits, conductors and insulators. The Blobz Guide to Electric Circuits A great interactive learning tool designed to support the teaching of electric circuits and conductors. Switched On Kids A really good site written especially for children which looks at sources of electricity and, electrical safety round the home. Dangers in the Home An interactive Flash fire safety site which explores dangers in the kitchen, living room, bedroom and garden.

Biologi, fysik, kemi och teknik Här hittar du som lärare material som kan ge inspiration till arbetsområden som utmanar elevers tankar och idéer. Undervisningsstödet är uppdelat ämnesvis och i årskursintervallerna 1-3, 4-6 och 7-9 och visar på en progression i både centralt innehåll såväl som i de förmågor som eleverna ska utveckla. Biologi: Vilken nytta har vi av naturen? Vilken nytta har vi av naturen? är en samling förslag på övningar där eleverna genom sitt deltagande kan närma sig begreppet ekosystemtjänster. Vilken nytta har vi av naturen? Fysik: Hitta regler Hitta regler är en samling förslag på övningar i fysik som tar sin utgångspunkt i elevernas kunskaper om kraft och rörelse. Hitta regler Kemi: Matens kemi Matens kemi är ett förslag på hur ett arbetsområde kan organiseras. Matens kemi Teknik: Tekniska lösningar i vardagen Materialet består av uppdrag som utgångspunkt för elever och lärare att tillsammans utforska tekniska lösningar i vardagen. Tekniska lösningar i vardagen

Galileo Drops the Ball - Virtual Experiment In around 1590 Galileo Galilei (1564-1642) climbed up the Leaning Tower of Pisa and dropped some balls to the ground. Two balls of different masses, but of similar shape and density that were released together hit the ground at the same time. Until then it was commonly believed that heavy things fall faster than light things. Many people still believe this, and casual observation of everyday phenomena often does tend to confirm this view. If you drop a brick and a feather at the same time the brick will probably hit the ground first. But this is because of differences in the amount of friction between these objects and the air around them, not because their masses are different. Galileo’s discovery is important in understanding how parachutes work. Click on the image to the left to try Galileo’s experiment for yourself. Find out more about Galileo Galilei.

Force and Motion Facts Motion makes the world go 'round. Motion makes the moon go 'round too. In fact, motion makes lots of things go. What is Force? Force is just a fancy word for pushing or pulling. These two forces act at a distance and do not require direct contact between the objects to function. See D4K's site on Gravity. Magnetism produces a force that can either pull opposite ends of two magnets together or push the matching ends apart. Types Of Contact Forces There are 6 kinds of forces which act on objects when they come into contact with one another. Let's investigate how these forces can be seen in our lives. Normal Force A book resting on a table has the force of gravity pulling it toward the Earth. Experiment with this concept by trying one of these paper bridge experiments from ZOOM or Building Big! Applied Force Applied force refers to a force that is applied to an object such as when a person moves a piece of furniture across the room or pushes a button on the remote control. Frictional Force

Khan Academy Evolution De tidigaste organismerna var encelliga och levde för tre och en halv miljarder år sedan. Alla organismer har genomgått en evolution och skillnaderna mellan dem beror på gradvisa anpassningar till olika livsmiljöer. Evolutionära förändringar har oftast lett till mer komplexa former men ibland har organismer förenklats, till exempel parasiter. Av allt liv som funnits har 99,9% dött ut. Fem frågor om evolution 1. Nej. Individer ”strävar” inte medvetet att bli perfekt anpassade till sin miljö. 2. Nej, den gynnar de egenskaper som leder till flest avkommor. liten - om miljön är trångsnabb - för att komma undan rovdjurklara hög temperatur - om man lever i tropikerna Det avgörande är samspelet mellan egenskaperna och miljön och om det leder till stor eller liten fortplantning. 3. Nej, naturligt urval styr evolution tillsammans med slump. Hos alla organismer kan arvsanlagen förändras, vilket sker slumpmässigt genom mutationer. Evolutionen pågår fortfarande. Det finns exempel på snabb evolution.

Optical Illusions - Free Picture Illusions ClassicScienceLife Mr.Q's LabNotes is a free monthly newsletter which provides lessons and insights as to new developments in Mr.Q's world. Free is good. Free is our friend! Check out the Blog of Mr.Q for new ways to supplement the Classic Science curriculum at home! Courses are taught year-round for teachers and homeschool families. Download the 36-week Life Science Textbook for free! Discounted rates are available for Co-op's and other organizations! Various workshop presentations are provided by Mr.

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