HOW TO MAKE A DEVICE THAT MEASURES THE SPEED OF WIND

In this experiments you will make a  device that will measure the speed of wind!!!
Materials:

A square chart paper

Colors [green, yellow and red]

1toothpick

Aluminum foil as long as the chart paper’s width

1role of tape

HOW TO MAKE

Step 1: Color the chart in order written below

                   GREEN

                    YELLOW

                     RED

Step 2: Poke the toothpick through the corner of the green area.

Step 3:  Attach the aluminum foil to the toothpick with the help of tape

               Here your device is ready

HOW TO USE IT?

Put the device in a windy area. The aluminum foil will move.

If the aluminum foil is on green it means that the wind is very weak. If the aluminum foil is on yellow it is neither strong nor weak. If the aluminum foil is on red it means the wind is very strong

TIPS: DO NOT KEEP THE DEVICE ON LOW SURFACE WHILE USING IT AS IT WON’T WORK ACCURATELY. THE ALUMINUM FOIL SHOULD NOT CONTAIN ANY WRINKLES, FOR ACCURATE RESULTS. 


(Please review this experiment)

 

PROVING ROOTS ABSORB WATER FROM THE SOIL.

In this experiment you will prove that roots absorb water from the soil.

Materials

 

2 pots

1scissors

2 plants [same type]

Instructions

 Cut the root of one plant and plant it. Plant the second plant without cutting the roots. You can name the pot [A & B]

Water both the plant regularly and equally and treat the plants n the same way.

Observe: The plant which has roots is healthy, but the plant with no roots is weak.

Why is this so?

Roots help plants to absorb water from the soil.Water is required to make food by the plants.This is why the plant without the root looks weak.


(Please review this experiment)

PROVING BLACK ABSORBS MORE HEAT THAN WHITE

In this experiment you will prove black absorbs more heat than white.

Materials

2 cans [same size, same shape, same material]

Black paint

White paint

Paint brush

2 thermometers

Water

Instructions

 Paint one can using a paint brush black and one can white. Fill same amount of water in the both cans and leave them under the sun for 1hour.

After 1hour measure the temperature of both cans using a thermometer.

OBSERVE: You will observe that the can painted black has higher temperature than the white can.


(Please review this experiment)

HOW TO MAKE A PULSE DETECTOR

You have often seen doctores using a stethoscope to hear your heart beat, and well in this experiment you will make a device that not only helps you to hear your pulse but also helps you to see your pulse beat!

Materials:

1thumbtack

1matchstick

Instructions

Insert the thumbtack at the back of the matchstick.

Here your pulse detector is ready.

How to use it?

Keep the pulse detector on your wrist and rest your wrist on the table.
 After a few seconds the head of the matchstick will move front and back, because of your pulse beating.

TIPS: Don't move your hand while using the pulse detector for accurate results.


(Please review this experiment)

ACID OR BASE

You know what is Ph paper right? Well litmus paper is used to find whether an object is an acid or base. So in this experiment you will make a solution through which you can come to know whether it is an acid or a base!

Materials:

2 teaspoon red cabbage juice powder

1 test tube [For storing the solution]

Water half of the container

1pipet or a dropper

Some objects to test, such as: lemon juice, salt, soap, a drop of coke or Pepsi

Making solution

 Fill the cup about three-fourth water and add 2 teaspoon red cabbage powder. And stir it.

Here your solution is ready. Now follow the steps bellow to use it

How to use the solution?

Now place an object on a plate.

Now use the pipette or a dropper to pick up a drop of the solution you just made, and drop it on the object.

         

The liquid changed color. If the liquid changes to light pink or red it is an acid. If the liquid changes to blue or green it is a base and if the liquid does not change color it’s a neutral.




(Please review this experiment)

HOW TO MAKE CRATORS

In this experiment you will make creators!!!!

Materials:

Many round objects [balls]

A shoebox

Plaster of Paris

Water

Paints [optional]

Instructions

 Mix plaster of Paris with water

 Before the mixture dries drop several round objects on it.

 After the mixture dries take out the objects and here your craters are ready.
 You can paint it with gray color to make it look a bit real.

On the moon several meteors crash and craters are formed here the balls are the meteors and plaster of Paris the moon. This model helps us to understand better about how Meteors are formed.

(Please review this experiment)

HOW TO MAKE MINI VOLCANO

In this experiment, I'll show you how to make a your very own Mini volcano and have fun with it, without any dangers!!

Materials -
A small bottle

Baking soda [1/2 of your bottle]

1cup vinegar

Sand [enough to cover your whole bottle except the mouth]

Red food color [optional]

LET’S START

Fill the bottle about half with baking soda.

Cover the bottle with sand so that it looks like a volcano.

Now get ready for action!


Mix red food coloring with the 1cup vinegar and now, pour the vinegar into the volcano and enjoy the volcano explode!

TIP: It would look better if you add food color!


(Please review this experiment)

HOW TO CLEAN PENNIES?

Have you ever tried cleaning dirty pennies with soap and water? Have the pennies got clean?

If you want to clean your pennies and get them back their shine, you must try this experiment....It's not just an experiment, because in the end you would have done some serious cleaning!

Materials

1cup vinegar

Some salt

Bowl

Preparaing the solution

Pour 1cup vinegar in the bowl and add salt to it.
Mix the solution gently using a spoon.
Your solution for cleaning pennies is ready!!!

Using the solution

Now drop several dirty pennies in the solution and leave it for a minute. Now take out the pennies immediately wash them with water and dry the pennies with the help of tissue.

Voila! You have clean shiny pennies in your hands!

What Happens when you put dirty copper pennies in the solution?

When you put the pennies in the solution, the solution loosens the residue [called copper-oxide] on the pennies and make them shiny once more, and when you rinse them with water, the cleaning stops.

If you don’t rinse the pennies they still have the solution on them and when these pennies contact oxygen in the air, a new reaction is formed which turns them into green-brownish color.

TIP: If you want them to be clean, rinse them with water, after you put them into the cleaning soluion.  The unrinsed pennies can never be cleaned!!


(Please review this experiment)

HOW TO MAKE INVISIBLE INK

In this experiment, I shall show you how to make will make invisible ink esily at home, using a few simple ingredients!

Materials

1/2 cup lemon juice

1bowl

A feather

Paper

Candle

Matches

Instructions

Dip the feather in the lemon juice, and with the help of the feather write a message.

Wait for it to dry.

After it has dried, you wouldn't be able to see anything on the paper.

Light the candle and hold the paper over the lighted candle to see the message.  Take care not to burn the paper, though!

My Special Tip: While writing, write very softly to avoid getting impressions on the page!


(Please review this experiment)