Perform this example and see how leaf structure affects its freezing.Things Required:Lettuce leafCelery leafGreen onionPaper towelDirections:Place the vegetables in a freezer on the paper towel. Check them every 2 minutes to determine which freezes first. This Is What Happens:The lettuce and celery leaves froze first and the onion took a much longer time to freeze.Science […]

If someone pulled the labels off identical containers of sugar and salt, could you tell which was which? There are ways to tell besides tasting them.Things Required:1/4 teaspoonful of salt2 small saucepans1/4 teaspoonful of sugar Directions:Place the salt in one of the pans and the sugar in the other. Heat each for a few minutes

In this great experiment, you will make leaves and stems of plants act like a straw.Things Required:Glass soda bottleIvy leaf and stemClayStrawPencilMirrorDirections:Fill the bottle to within an inch of its top. Wrap the clay around the stem near the leaf. Place the stem into the bottle. The end of the stem must be below the

In which pot- the short, wide one or the tall, narrow one-can we poach an egg faster?Things Required:A tall, narrow pot4 cups of waterA slotted spoonA short, wide pot2 raw eggsA timer (optional) Directions:Pour two cups of cold water into each pot.Place the short pot on the stove over a medium flame. After the water

Sugared LeavesHow do nutrients transport through the stems of plants? This experiment shows the answer.Things Required:2 fresh stalks of celery with leaves (the pale inner stalks from the bunch is best)2 glassesSugarMeasuring spoon -tablespoon (15 ml)Masking tapeMarking penDirections:Fill each glass one-half full with water. Add 4 spoons of sugar to one of the glasses. Label

Does it matter what size of a pot we cook in? Does size and shape matter? Find out.Things Required:A tall, narrow potA short, wide pot2 cups of waterDirections:Pour a cup of water into each pot. Place both pots on the stove over a medium flame. This Is What Happens:The water in the short pot boils

This experiment shows how water is transported through plant stems.Things Required:Measuring cup (250 ml)2 glasses1 white carnation with a long stem (purchase at a floral shop)Red and blue food colouring Directions:Ask an adult to cut the stem in half lengthwise from the bottom to about half way up towards the flower. Pour 1/2 cup of

What effect does salt have when you boil water?Things Required:2 small pots half full of cold water2 tablespoonfuls of saltDirections:Add two tablespoonfuls of salt to one of the pots of cold water. Don’t add anything to the other pot. Heat both pots on the stove. Which one starts to boil first? This Is What Happens:The

An exiting experiment that shows what causes plants to burst when over-watered.Things Required:Rhubarb stalks (found in vegetable department of grocery store)Bowl of water Directions:Place the rhubarb stalks in the bowl of water. Leave the stalks undisturbed for one day.Observe the shape of the stalks after being in the water.This Is What Happens:The ends of the

Besides sprinkling on too much salt, what makes food taste too salty?Things Required:SaltWater2 potsDirections:Add two tablespoonfuls of salt to two cups of water. Stir and pour half into one pot and half into the other.Boil the water in the first pot for 20 minutes. Boil the water in the second pot for 10 minutes. Let

The purpose of this experiment is to demonstrate how the change in turgor pressure causes plant stems to wilt.Things Required:1 drinking glassWilted stalk of celeryBlue food colouringDirections:Ask an adult to cut a slice from the bottom of a wilted celery stalk. Put enough food colouring into a glass half full of water to turn it