Motion makes the world go 'round. Motion makes the moon go 'round too. In fact, motion makes lots of things go. When we think of motion we often think of cars, bicycles, kids running, basketballs bouncing and airplanes flying. But motion is so much more. Motion is important to our lives and impacts so many things that we do. 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. Applied Force Frictional Force Tension Force Spring Force Resisting Forces What is Inertia?
Motion: ForcesForces are a big part of physics. Physicists devote a lot of time to the study of forces that are found everywhere in the universe. The forces could be big, such as the pull of a star on a planet. Let's look at the forces acting on that soccer ball before you kicked it. If there is more than one force acting on an object, the forces can be added up if they act in the same direction, or subtracted if they act in opposition. There is one totally important formula when it comes to forces, F = ma. Or search the sites for a specific topic.Galileo Drops the Ball - Virtual ExperimentIn 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. 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.
Roller Coaster GameWelcome to the death defying Funderstanding Roller Coaster! This simulator is designed for people who want to design their own thrilling coaster and educators who want to use a cool activity to simulate the application of physics by using an exciting interactive tool and access to a wonderful reference source. It is your mission to become a roller coaster designer so that you can achieve maximum thrills and chills without crashing or flying off the track (unless that’s how you like your coaster to work!). If you accept this mission you must decide on a number of factors. This great educational online tool offers an interactive way for kids to play a roller coaster game, and learn while doing it. Finally, some fun online education kids! Due to some great feedback, we have decided to put back the original coaster AND also created a different version of this new coaster which keeps the coaster locked to the track. If you need help, click on the ‘? Contact us for more information.
EvolutionDe 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. Med evolutionsteorin kunde Charles Darwin förklara hur olika arter av växter och djur har förändrats och utvecklats sedan livet började på jorden. Av allt liv som funnits har 99,9% dött ut. Av nu levande flercelliga arter har nästan två miljoner hittills beskrivits. 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.
Edheads - Activate Your Mind!Optical Illusions - Free Picture IllusionsClassicScienceLifeMr.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.
ExperimentskafferietLife Science | Session 1Boy with "green stuff" Learning Goals During this session, you will have an opportunity to build understandings to help you: Distinguish between living, dead, and nonliving Define the characteristics of life Video Overview What is life? Video Outline We open with a look at environments where you wouldn’t expect to find life and pose this question: "If you are looking for life, what do you look for?" The program continues as children in grades two and three are presented with a challenge: group objects as living, dead, or nonliving. In Brooklyn, New York, we visit LauraJo Kelly and her second-grade students as they generate their own definitions of living, dead, and nonliving and proceed to design experiments to test whether a “mysterious” object is alive. Our search for an answer to the question "What is life?" Finally, Dr.
Bang Goes the Theory - Hands-on science: Water bottle rocketsscience 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. 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 2Energy 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.