HOW TO MAKE AN ‘ANEMOMETER’

In this experiment you will make a device (anemometer) that will tell you the speed of wind per hour and minute!!

Materials

A square shaped cardboard sheet

Clay

Pencil with a rubber on its back

Tape

A thumbtack

4 paper cups

Instructions

Cut two equal strips of cardboard.

 Put them on each other so that they form a cross.

 With the help of the tape stick the 4 paper cups on each end of the cross. Paint one cup in any color.

Put the thumbtack in the middle of the cross.

 Attach the cross to the back of the pencil. Now put the nib of the pencil on a ball of clay and…………….Your anemometer is ready.

Put it outdoors and note the position of the painted cup, and wait and record the number of time it rotates per hour or minute and measure the speed in number of rounds per hour or minute.

DANCING RAISINS

In this experiment you will have fun by watching these awesome raisins dance!!

Materials:

Carbonated soda

Raisins 

Trasperent glass

Instructions

Pour the carbonated soda into the glass.

Now put a few raisins into the soda and then watch what happens to the raisins, they don't float nor sink they simply dance!!

What happens?

As the bubbles of the soda float, the raisins attach them and when they almost come to the surface the bubbles burst causing them to fall and when they are sinking they attach new bubbles and the same    

process repeats again!! 

PROVING PLANTS NEED AIR

In this experiment you will prove plants need air.

Materials:

2 potted plants about 2 to 3 inches tall.

A plastic cup (enough to cover the plant)

INSTRUCTION

Cover the plant with the plastic jar. Don’t cover the pot!!

 Put the both plant outdoor and treat both plants in one way.

Observe: You will observe that the plant that is covered looks weak and unhealthy where as the other plant looks strong and healthy. Now take of the plastic jar and leave it outside for 1 hour. You will see the plant already start recovering!!!

HOW TO TEST IS A BREAD NATURAL OR CONTAINS CHEMICALS!

Eating non-chemical breads is a lot healthy but eating breads with chemicals is very unhealthy. So in this experiment you will see which bread contains chemicals and which bread does not by growing mould!

Materials:

Different kinds of breads (example: homemade bread, local bakery’s bread.)

Water

Plates

Instructions

Put the samples of the bread on one plate each.

Everyday sprinkle some water on the bread don’t let it dry.

Observe: After a few days you will observe that the breads are turning their color to black and white this black or white color is Mould. The bread on which the mould grows the fastest does not contains any chemicals the bread on which the mould grows the slowest has chemicals in it.

HOW IS THIS SO?

These days’ bread factories are adding chemicals to the bread to prevent the growth of mould. This keeps the bread fresh for longer days!

PURIFYING WATER

Have you heard about soluble substances and insoluble substances if not let me tell you about them. Soluble substances are substances which dissolve in water and insoluble substances are substances that do not dissolve in water. Removing soluble impurities is expensive and tough to be removed from water where as insoluble impurities are easier and inexpensive to remove from water. Well so in this experiment I will teach you a method to remove soluble impurities very easily and very inexpensively.

Materials:

1big glass

1small glass

A plastic wrap

Salt

Drinking water

Pebble

Instructions

Dissolve salt in water and pour the solution into the big glass.

Now put the small glass inside the big glass were you have kept the solution

Now wrap the big glass with the help of plastic wrap and then put the pebble on top of the plastic wrap were the small glass has been placed.

Keep this object outdoors on a very sunny day

Wait 2 or 3 hour.

After 2 or 3 hour taste the water in the small glass is it salty?

What happens?

Because of the heat of the sun the salty water in the big glass evaporates and leaves the salt behind the water while evaporating hits the plastic wrap and because of the pebble it falls in the small glass and now you have your own purified water!!


   (Please review this experiment)

HOW TO MAKE A ‘THERMOMETER’!!!!

Making a thermometer is quite easy! Follow the experiment given below to make a thermometer and mark the scale on your homemade thermometer.

Material:

A see through plastic bottle

A see through straw

Modeling clay

Red food coloring

Cold water

1thermometer

A strip of paper.

Instructions

 Pour cold water into the bottle about halve and add some food coloring to it.

 Put the straw in the bottle but don’t let it touch the bottom and then seal the top of the bottle with the help of modeling clay.

Here your thermometer is ready. Follow the instructions below to draw a scale on your thermometer!!!

Making a scale on your thermometer!!

Now stick a paper on the bottle starting from the water to the modeling clay. This is your scale. To complete it you will have to put your thermometer in cold water and the real thermometer too in cold water. After halve an hour read the temperature on the real thermometer and mark the temperature on the thermometer where the water is in the straw.

(Please review this experiment)

HOW TO MAKE HOMEMADE CRYSTALS!

In this experiment you will make crystals!!

Materials:

1thread

1pencil

Hot water

Sugar

Glass

Instructions

 Fill hot water in the glass and keep dissolving sugar in it when the sugar stops dissolving stop adding sugar.

 Tie the string to the pencil and put the pencil on the glass and allow the string to touch the water.

 Now wait for a week. After a week you will observe that the crystals start forming on the string! The longer you wait the bigger the crystals will be!!!


(Please review this experiment)

HOW TO CHOP ONIONS TO AVOID TEARS FROM YOUR EYES

In this experiment you will learn how to chop an onion to avoid tears from the eyes!


Materials:
Water 
Onion
Knife
A bowl

Instructions

Fill the bowl with water.

Now chop the onion inside the bowl filled with water.

Do your eyes water?

 What happens?

Onions have some oil (known as onion oil) inside them when chopped, sliced or squeezed the oil is given out through the air in form of gas which make tears come out from your eyes or make them burn!!

When you chop the onion in the water as the gas can only be given out through air the oil remains in water.

Caution: Chopping onions shall be done under ADULT SUPERVISION


(Please review this experiment)

MAKING SOLAR PANEL TO HEAT WATER

In this experiment you will make a Solar panel to heat water.

Materials:

1black baking tray

Water

Plastic wrap or a plastic bag [transparent]

1rubber band

 Instructions

Fill three-fourth water in the baking tray and wrap the plastic wrap to cover the baking tray.

Use the rubber band to tie it. 

Now keep it in the sun for 1hour.

OBSERVE: You will observe that the water is hot or very hot!


(Please review this experiment)

RECYCLING PAPER

In this experiment you will learn how to recycle paper.

 Materials:

Old news paper

Scissors

Water

Sieve

Plastic sheet

Few heavy books

Mixing bowl

Spoon

 Instructions

Tear the paper into bits with the help of the scissors [you can use your hands too]

Now put the bits in the mixing bowl and add water to it. Mix the mixture for 5 minuets.

 After mixing slowly pour the mixture on to the sieve and then put the plastic sheet on top of the mixture.

 Now put few books on top of it. 

Wait for two days, you will find that the mixture is now turned into paper!!!  

Use this paper as you want and keep recycling paper to save the EARTH!!

(Please review this experiment)

TESTING AN OBJECT TO FIND THE PRESENT OF FAT IN THE FOOD ITEM

In this experiment you will see the presents of fat in the food item.

Materials:

A light bulb

1yellow color paper

One food item [example: butter]

 Instructions

 First put the paper on the bulb the paper would not be transparent. Now rub the butter on the paper and let it dry.

 Now you will see the paper is oily and now put the paper on the bulb.

You will observe that the paper is a bit transparent. If the paper does not becomes transparent it does not contains fat!!!


(Please review this experiment)

 

PROVING AIR NEEDS SPACE

In this experiment you are going to prove that air needs space.

Materials



Some wool or some paper

1glass

1bowl

Water

Instructions

Fill the bowl with water.

 Now put the wool or paper in the glass and make sure it does not fall when turned upside down.

 Now put the glass upside down and put it in the water. Make sure you do not tilt the glass. NO air bubbles are formed.

Now take the glass out. What do you observe? Is the wool wet?

What Happend?

When you put the glass into the water the glass is full of air. When you put the glass in the water the air does not allows the water to get in and the wool is dry. But if you tilt the glass the air in the glass escapes in the water and does air bubbles are formed. The water then enters the glass and makes the wool wet.

Thus we can prove air needs space.


(Please review this experiment)