121 Science Experiments

Materials Required:l Sheet of paper Procedure:Do you know a fast way to stick a piece of paper to your hand without using any glue or tape? Would you believe that air will do the job? Well, it will! Just follow the steps below. Hold your arm straight at your side. Turn your hand so that […]

Materials Required:l Bathtubl Waterl SoapYourself Procedure: The next time you take a bath, scrub yourself clean with soap, then soak in the tub for at least fifteen minutes, with some bubble bath, if you like! After you step from the water and dry yourself off, check your fingertips and the bottoms of your feet. Do

Materials Required:l Onionl Cutting boardl KnifeThe help of one of your parents Procedure: Set a small onion on a cutting board or plate. Ask one of your parents to slice the onion in half with a sharp knife. Hold the cut onion next to your nose and take a little sniff. You will begin to

Materials Required:l 1 tablespoon dried hot peppersl ¼ cup hot tap waterl Cotton swab Procedure: Mix the hot peppers in the hot tap water. Let the mixture soak for about twenty minutes. Next, dip a cotton swab in the water, then shake off any excess water. Touch the tip of the swab to your tongue.

Materials Required:l Bathroom scalel Paper and pencilA hot summer day Procedure: On a hot summer day, weigh yourself on the bathroom scale. Write down your weight on a piece of paper. Now go outside and play—ride your bicycle, play baseball, run. If you get thirsty do not come inside for a drink. Continue your play

Materials Required:l Outdoor thermometerA cold day Procedure: Dress properly and go outside on a cold day. Hold a thermometer in the air for a few minutes and when the mercury has settled, notice what the air temperature is. Next, slide the thermometer up your sleeve so that it rests against your skin. Again, wait a

Materials Required:l 3 bowlsl Water Procedure: Fill 3 bowls with tap water as follows: one with cold water, one with lukewarm water, and one with hot water—but not hot enough to burn. Place the bowls on a table or counter, with the lukewarm water between the other two. Place one hand in the cold water

Materials Required:l Paper towel tubel Matchbook Procedure:To discover a power that you are probably not aware of, try this easy experiment. Did you know that your eyes can pierce solid objects? Hold an empty paper towel tube in front of one eye. Hold a matchbook in front of the other eye, with the cardboard touching

Materials Required:l 10 sheets of typing paperl Rubber bandl This bookl Mirror Procedure: Roll the 10 sheets of typing paper into a hollow tube. Slip a rubber band over the roll to hold it in place. Hold the tube against some words on this page and look into the cylinder. Your face should be pressed

Materials Required:l Wooden matchl Thumbtack, with a wide, flat surface Procedure:You can feel your heart beating, but did you know that you can also see it beating? All it takes is a simple device, which you can make in a few minutes. Press a wooden match onto the point of the thumbtack. Set your device

Materials Required:l ChairA friend Procedure: Ask a friend to relax in a chair. He should fold his arms and stretch his feet as far forward as possible. Tell him to lean far back so that his head faces upward. Now press a fingertip onto his forehead and challenge him to get up from the chair

Materials Required:l Soft-lead pencil, such as a No. 2 pencill 2 sheets of paperl Transparent tapeYour finger Procedure: Hold the pencil on its side and rub the lead on a sheet of paper. Continue rubbing the same spot over and over until it is covered with a heavy black coating. Now, press your index finger

Materials Required:l Asparagusl BathroomYourself Procedure: The next time you have asparagus for dinner, note its distinctive odour and taste, and eat a generous helping. When you go to the bathroom the next morning, do you notice the same asparagus smell? Why does this happen when other foods that you eat do not produce their own

Materials Required: l 2 cherry cough dropsl 2 small jars, such as baby food jars, with lidsl Water Procedure: Place a cough drop in each small jar, then fill each about halfway full with water. Screw the lids on tightly. Gently shake 1 jar by turning it upside down and then right-side up, over and

Materials Required:l Unsweetened cracker Procedure: Place an unsweetened cracker in your mouth. Chew it thoroughly, but don’t swallow it. Continue to chew without swallowing for several minutes. Does the cracker now taste sweet? This Is What Happens:The moisture in your mouth is called saliva. Saliva contains chemicals that start to break down the food before