121 Science Experiments

Materials Required:l Sheet of typing paperl Rubber bandl Book Procedure: Roll a single sheet of typing paper into a tube and slip a rubber band around it. Stand the tube on end on a flat surface. Carefully place a book on top of the tube and you will see that the paper supports the weight […]

Materials Required:l A weighing scale Procedure:Here’s an easy way to lose several kilograms instantly. Stand on the bathroom scale and raise your arms high above your head. Read the dial and note how many kilograms you weigh. Lower your arms rapidly to your sides. You are suddenly many kilograms lighter. Oops! A few seconds later,

Materials Required:l A thunder and lightning storm Procedure:Can you tell how far away a storm is? Here is a simple way to find out. The next time a big thunderstorm occurs, watch for the lightning. As soon as you see the flash in the sky, start counting, “thundercracker 1, thundercracker 2, thundercracker 3,” and so

Materials Required:l Fish tankl Waterl Blue food colouringl 1 cup vegetable oill Stirrer Procedure: Fill a fish tank or other large, clear container about half full with water, and add some food colouring until the water turns to a deep shade of blue. Then pour the oil on top. Slowly stir the water. The oil

Materials Required:l Saucepanl Waterl Frying panl Ice cubesThe help of one of your parentsProcedure: Fill a saucepan about ¼ full with water, and ask one of your parents to boil it over high heat. Fill a frying pan with ice cubes, then give it to your parent to hold several inches above the steam escaping

Materials Required:l Glassl Waterl Ice cubel Stringl SaltProcedure: Fill a glass with water and place an ice cube on the surface. Tie a loop, about 1 inch in diameter, in a piece of string several inches long. Set the loop on top of the ice cube. Sprinkle some salt over the top of the cube

Materials Required:l 2 thermometers, 1, or both, with an exposed bulbl Clothl Threadl Waterl Electric fan Procedure: Make sure the two thermometers give identical readings. Wrap a piece of lightweight cloth once around one of the exposed thermometer bulbs, and tie it in place with thread. Wet the cloth with water, then hold both thermometers,

Materials Required:l Paper strawl Scissorsl Drinking glassl Water Procedure: Slit a paper straw across, about 1/3 from one end, making sure you do not slit it all the way through. Bend the straw back like a hinge and insert the short end into a drinking glass. Fill the glass with water until the level almost

Materials Required:l Funnell Glass bowll WaterProcedure: Set a funnel, small side up, on a counter top, then set a large glass bowl next to it. Notice how high the tip of the funnel extends. Fill the glass bowl with water to a level just below this point. Hold the funnel between your thumb and middle

Materials Required:l Newspaperl Waterl Dinner platel Matchesl Wide-mouth jarThe help of one of your parentsProcedure: Fold a newspaper page several times until it measures approximately 4 by 5 inches. Soak this piece in water, until it is completely wet, then place it on a dinner plate. Fold a smaller piece of dry newspaper, about 4

Materials Required:l Small, glass soda bottlel Freezerl Waterl Coin Procedure: Wash out an empty glass soda bottle and place it in the freezer. After several hours, remove the bottle and moisten the top with water. Set a coin over the opening. The coin should make a seal at the mouth of the bottle. Cup both

Materials Required:l Glass soda bottlel Waterl Drinking glass Procedure: Fill a glass soda bottle to the rim with water. Hold a clear drinking glass upside down and place it over the mouth of the bottle. Holding both the glass and the bottle together, turn them upside down at the same time. Some water may escape

Materials Required:l Bath spray hosel Funnell Bathtub faucetl Ping-Pong ballThe help of one of your parents Procedure: Ask one of your parents to remove the spray head from a bath spray hose, then insert the narrow end of the kitchen funnel into the hose opening. Connect the other end of the hose to the bathtub

Materials Required:l Metal canl Naill Hammerl Round balloonl SoapThe help of one of your parents Procedure: Ask one of your parents to make a small hole near the bottom of a metal can by tapping the tip of a nail into the metal can with a hammer. Inflate a round balloon until it is slightly

Materials Required:l Round balloonl String, 1 foot longl Faucet Procedure: Inflate a round balloon and tie the opening with the piece of string. Turn on the faucet at full force to produce a rushing stream of water. Hold the end of the string and allow the balloon to hang freely. Slowly move your hand toward