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Wintry Science
Tweet Wintry Science Here’s a seasonally related temperature experiment exploring what happens when we freeze oil & water You will need: a clear plastic container, water, cooking oil food colouring (optional), use of a freezer. Instructions 1. Pour some water into the clear plastic container. You can add some blue or green food colouring [...]
Ketchup Volcano!
Tweet Ketchup Volcano! ( A longer-lasting volcano with ‘Natural Orange-Red Nontoxic Lava’ !) The acetic acid in ketchup reacts with baking soda to produce an extra-special type of lava for a chemical volcano. This non-toxic volcano recipe is sure to please! You will need: Small container (we used an empty travel-size bottle.) Volcano (You can [...]
Diving Ketchup!
Tweet There are many variations on this effect – we’ve covered the concept before. However this has to be the simplest to do with the best explanation. Place a ketchup packet in a bottle of water and make it rise and fall at your command, as if by magic. Of course, the magic involves some [...]
Frozen Rock
Tweet Do this experiment to see what kinds of rocks break down the most when frozen, thawed and frozen again. You will need: Several different kinds of rocks, such as granite, sandstone, or limestone Plastic bottle or container Water Freezer …and several hours – this is a long format experiment. Instructions Look at each [...]
Feeling Centred!
Tweet Investigating Centre of Gravity You will need: A broom That’s it! However you could use the following optional extras if you have them: metre rule, golf club, baseball bat, hockey stick etc. Instructions 1. Spread your hands as far apart as you can along the broom. 2. Pick up the broom using only [...]
Suspended Bottle
Tweet This is another of those experiments that look like magic – but are really science of course. You will need: Coke bottle or any other plastic screw top bottle Uncooked Rice A pencil or chopstick or any other straight rod Instructions 1. Fill the bottle with uncooked rice. 2. Plunge the pencil straight [...]
The Super-Bounce!
Tweet Energy is constantly changing forms and transferring between objects. Try seeing for yourself how this works. Use two balls to transfer kinetic (or moving) energy from a big ball to a smaller one and see what happens. To revisit this classic science experiment you will need: A large, heavy ball such as a basketball [...]
Mutant Marshmallows
Tweet In the microwave, an ordinary marshmallow will puff up until it’s enormous! You Will Need: marshmallows paper plates or paper towels microwave oven toothpicks (if you want) food colouring (if you want)…and adult supervision. Instructions Put two marshmallows on a paper plate or paper towel. Put the plate in the microwave. Set the timer [...]
Rainbow in a Jar
Tweet Another one that could hardly be simpler, but is also very good science and in this particular version makes a display of wonderful colours. You will need: Blue washing up liquid Corn Syrup Blue and Red food colouring Olive Oil Rubbing Alcohol (Isopropyl Alcohol – available from the chemist) Plus… a spoon measuring cup [...]
Scientific Slushy!
Tweet Cool off and amaze your friends by making any soft drink or soda turn into a slushy on command. Here’s how to do this fun and refreshing supercooled science project. You will need: A soft drink A freezer Any soda or soft drink works for this. The slushy project works especially well with 16-oz [...]