Build a Simple Electromagnet

An electromagnet is the magnet in which the magnetic field is produced by an electric current. Electromagnet consists of a coil wrapped with a wire. The current through the wire turns the coil into a magnet. Materials: 30 cm copper wireA long nailBattery 4.5 VoltPaperclips Procedure: Wrap the wire several times around the nail. Scrape the…

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Build a simple electric motor

Electric motors are the devices that convert electrical energy into mechanical energy.  Materials: Battery 1.5Volt2 circular magnetsInsulated copper wire Procedure: Place the two magnets on the negative pole of the battery. Shape the wire as it is shown in the image and place it on the positive pole of the battery. The two ends of the…

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Disappearing Glass Experiment

Materials: glass sunflower oil glass rod Procedure: Fill a small glass with sunflower oil. Dip a glass rod into the sunflower oil. Notice that the rod has disappeared! Explanation: Light travels with the same speed in glass and in oil. When the light comes on the rod it will continue its straight spread, without refraction,…

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Rocket Balloon

Rockets lift off and their detachment from the ground is due to the fact that the rocket expels fuels backwards, while at the same time air pushes rockets forward. Materials: Rope Straw Sellotape Balloon Procedure: Pass the rope through the straw. Stretch the rope and fasten one end to the wall. Place the balloon along…

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Self Inflating Balloon

Materials: Vinegar Small bottle Baking soda balloon Procedure: Put two fingers of vinegar in the bottle. Place a teaspoon baking soda in the balloon. Fasten the balloon to the mouth of the bottle and turn the balloon over. Watch the balloon inflate!! Explanation: When baking soda (carbonate) comes into contact with vinegar (acid) they react…

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Reversing Arrow Illusion

Materials: Glass Water Paper pen Procedure: Draw two parallel arrows on a piece of paper. Fill a glass with water halfway through. Place the paper behind the glass in such a way that one arrow is below the water level and the other arrow above it. Look at the arrows through the glass. The arrow…

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