Locating Pollutants Materials Required: Two small drinking glasses Pepper Paper coffee filter Water, our basic necessity, is taken for granted by us. Make a list of all the things, in which water is used inside and around your house. Without water, we will not be able to survive. Owing to its importance, we must keep our sources of water clean. Once water is polluted or dirty, it is often hard to...

Levels of Humidity Materials Required: Two rulers Two pieces of cloth, 4 inches (10 cm) square Six thumbtacks 2 pencils Safety scissors Eye-dropper Paper Clock or watch In the air around us, there are tiny droplets of moisture. This moisture in the air is called Humidity. If there is a lot of moisture in the air, we say that the humidity is high. When someone takes a hot shower, the room...

Human Migration Materials Required: Paper and pencil A two-way street An adult in high traffic areas Animals migrate from cold places to warmer climate. If you live in the north, you will notice that birds fly south for the winter and come back in the spring, when the weather warms up. In the mountains, some animals come down to the valley in the winter for food and go back up in...

Fun Without Electricity Materials Required: Pencil Er paper Research Electric power company bill (optional) Television game console, computer In older times, people used to amuse themselves with games like chess, boards, cards and other objects. Now obviously, with electricity and its appliances, these games have made way for computer and video games. As a matter of fact, even card games like Solitaire and Hearts are now played on the computer, rather...

Natural Colours and Dyes Materials Required: Old pieces of cloth Tea bags Cranberry juice Cherry juice Grape juice Four small margarine tubs Clothesline and spins Warm water Dye is a colouring matter, used in clothes and paper. We can also obtain natural dyes from our environment.  Take four margarine tubs and pour some grape juice in one, cranberry juice in the other, cherry juice in the third and using some warm...

Escaping Heat Materials Required: 1. Freshly mowed glass clippings 2. Lawn rake 3. A watch 4. A nice, warm and sunny day Decaying organic things cause the production of heat energy. Gardens require structures called “compost piles” to make fertilizers in order to feed the garden. A compost pile is basically a small area, which contains all sorts of dead or dying plants, animal leavings such as peels and scraps from...

Effects of Microwaves Materials Required: An adult A microwave Twelve bean seeds Potting soil An egg carton Marker Some water Paper and pencil The electromagnetic rays from microwaves radiate strong force, which can be harmful to people. This is why, they are designed in a special manner, with switches on the oven doors. The switch turns the power off, when someone opens the door. This keeps the user safe from the...

Distribution of Solar Energy Materials Required: Nails A six-inch long piece of wood A fishing rod and reel Strings A thermometer Also an aquarium thermometer Metal washers Pencil and paper Are all the parts of a water body heated uniformly by the sun’s rays? Like in a lake does the temperature of surface water is the same as the water several feet down? Take a guess which will be warmer, water...