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110 pages

English

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Science, as we all know refers to a body of knowledge itself, of the type that can be rationally explained and reliably applied. Science is a unique combination of Theory and Practice. A thorough knowledge of this subject is almost impossible without proper practical demonstrations which are also termed as Scientific Activities or Projects.In this book, 71+10 Science Activities, the author has taken up the simple facts and principles of Science, such as: Air Force, Pressure, Weight, Emulsification, Osmosis, Gravity and Motion, Rotation, Types of Energy, Vibrations, Good and Bad Conductors of Electricity, Experiments with Magnets, Light and Sound for children, and projected them in a very simple and lucid language for the readers-- particularly the school kids who can easily perform these activities at home or school , of course with the help and able guidance of their parents, elders or teachers. The book is meant for children of all age groups, particularly from 6 to 13, who can perform and experience the thrill of these fun-filled experiments as well as learn the basic principles of Science easily and quickly. Therefore, this book is a must read for all school kids, especially those from classes, five to nine to learn as well enjoy conducting all the 81 Fascinating Activities listed in the book, each explaining or proving some scientific theory or law. So go ahead children, enjoy reading, learning and experimenting!

Sujets

Sciences et techniques

Scientific instrument

India

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Publié par	V & S Publishers
Date de parution	01 juin 2015
Nombre de lectures	0
EAN13	9789350574010
Langue	English
Poids de l'ouvrage	3 Mo

Informations légales : prix de location à la page 0,0500€. Cette information est donnée uniquement à titre indicatif conformément à la législation en vigueur.

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71+10 New
Science
Activities
Published by:
F-2/16, Ansari Road, Daryaganj, New Delhi-110002 011-23240026, 011-23240027 • Fax: 011-23240028 Email: info@vspublishers.com • Website: www.vspublishers.com
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© Copyright: ISBN 978-93-505740-1-0
DISCLAIMER
While every attempt has been made to provide accurate and timely information in this book, neither the author nor the publisher assumes any responsibility for errors, unintended omissions or commissions detected therein. The author and publisher make no representation or warranty with respect to the comprehensiveness or completeness of the contents provided.
All matters included have been simplified under professional guidance for general information only without any warranty for applicability on an individual. Any mention of an organization or a website in the book by way of citation or as a source of additional information doesn't imply the endorsement of the content either by the author or the publisher. It is possible that websites cited may have changed or removed between the time of editing and publishing the book.
Results from using the expert opinion in this book will be totally dependent on individual circumstances and factors beyond the control of the author and the publisher.
It makes sense to elicit advice from well informed sources before implementing the ideas given in the book. The reader assumes full responsibility for the consequences arising out from reading this book. For proper guidance, it is advisable to read the book under the watchful eyes of parents/guardian. The purchaser of this book assumes all responsibility for the use of given materials and information. The copyright of the entire content of this book rests with the author/publisher. Any infringement / transmission of the cover design, text or illustrations, in any form, by any means, by any entity will invite legal action and be responsible for consequences thereon.
Publisher’s Note
I n line with a number of books and best-sellers in Science for children, particularly the school students, V&S Publishers have now come up with the following two, absolutely new and thrilling books on Science Projects, namely 71+10 New Science Projects Junior and 71+10 Science Activities .
In the book, 71+10 Science Activities , the author has explained the simple laws and principles of Science, such as: Air Force, Pressure, Weight, Emulsification, Osmosis, Gravity and Motion, Rotation, Resisting Motion, Stored Energy, Vibrations, Good and Bad Conductors of Electricity, Experiments with Magnets, Light and Sound for children, and projected them in a very simple and lucid language for the readers-- particularly the school kids who can easily perform these activities at home or school , of course with the help and guidance of their parents, elders or teachers.
Basically, the main idea behind publishing such books are that they are educative, informative as well as interesting and full of fun. Children of all ages, particularly from 6 to 13 can perform these fun-filled activities and learn as well - the basic principles of Science easily and quickly. Moreover, as we are all aware of the fact that Science cannot be understood properly and learnt theoretically without practical demonstrations or experiments - in order to test and prove the different scientific laws and theories.
Therefore, this book will enable all its readers, especially the young ones to learn as well enjoy performing all the 81 fascinating Science Activities listed in the book, each explaining or proving some scientific theory or law - making it really worth reading!
Contents
Publisher’s Note Air Force Air Pressure Difference Keeping it Aloft Difference in Weight Whirling Air Barrier to Moisture Emulsification Osmosis Puffs of Air Streams of Water Flattening the Hole Wetting Agent Upside Down Continuous Process Balloon Lift Low Pressure Soft Banana Slight Motion Eyedropper Large Body of Water Dew and Frost Forwarding Boat Tiny Crystals Weaker Point Can Rotation ‘S’-Shaped Curve Resisting Motion Good Conductor Stored Energy Gravity and Motion Vibrations Rolling Motion Slippery Walls Raindrop and Hamburger A Flagpole Salt Water & fresh Water The Earth’s Surface Straightened Toothpick Electronic Attraction Comb Your Hair Charged Particles Particles Accumulation Imaginary Lines Sandy Settlement Oblate Spheroid Mobius Strip Unusual Catsup Bottle Coin to Coin Magnetic Field Salt, Pepper and Water Rust Formation Lost Liquid Acid and Alkali Orderly Designs Switching Places How to make a Soap? Big Juicy Bite Fibrous Network Gummy Gluten Water Matter No Entry Water Droplets Hole in the Seed Geotropism Green Matter Leaf Skeleton Microscopic Plants Cell Multiplication Berlese Separator Piece of Artwork Metamorphosis
10 Projects in Colour
1. Hot Air
2. Pleasant Quality
3. The Force of a Push
4. The Force of Gravity
5. Strength of an Arch
6. Ball Bearings
7. A Set of Gears
8. Sand Clock
9. Coloured Dots
10. Designer Eyes
1 Air Force
Things Required:
Sheet of paper

Directions:
Do you know a fast way to stick a piece of paper to your hand without using any glue or tape? Would you believe that air will do the job? Well, it will! Just follow the steps below.
1. Hold your arm straight at your side. Turn your hand so that the palm faces forward.
2. Press a flat sheet of paper to your palm, using your other hand. Now start running as fast as you can and take away the helping hand. The paper will stay in place as you run.
Explanation:
Even though you can’t see air, it is a substance, just like anything else, and it exerts a force against objects. When you ran with the paper, you created a force pushing against the air. The air pushed back against the paper and held it in place against your hand. Hence, we conclude that air too, has and exerts force.

2 Air Pressure Difference
Things Required:
A sheet of typing paper
Directions:
1. Hold an 21 x 28 cm sheet of typing paper high above your head. Use both hands to grasp the paper. Let go. The paper will scoot in various directions and probably turn over.
2. Now make two folds in the long side of the paper, first, 2.5 cm inward, then, 2.5 cm again.
3. Hold the paper over your head, but make sure that the folded edge is at the front, and on the underside, of the sheet. Gently push the paper as you release your grip. The paper will not turn over and will glide for some distance before falling to the ground.

Explanation:
As the plain sheet of paper falls, the force of the rushing air over it causes differences in air pressure over different parts of the paper. The front end tilts up, and the paper may move in a topsy-turvy fashion. However, by folding the edge, you increase the weight, that is at the front, and this weight balances the upward force of air, causing the paper to glide smoothly without flipping over. The Airplane wings are also shaped like this - they are a little bit heavier in front than they are in the rear - which helps to make the ride a smooth one.

3 Keeping it Aloft
Things Required:
2 sheets of paper
Pencil
Ruler
Scissors
Directions:
1. With a pencil and ruler, draw two rectangles that measure 30 by 15 cm on an ordinary note or paper and cut them out.
2. Now, make a cut lengthwise on each piece of paper as if you were cutting them in half, but do not cut all the way through. Make each cut only 15 cm long.
3. On both pieces of paper, fold one of these flaps one way, and the other in the opposite direction.
4. On one piece, make continuous 2.5 cm folds along the uncut side. On the other piece, fold the uncut side into a triangle, and then fold it again into another triangle.
5. Stand on a chair or bench. Drop your two creations to the ground. They will twirl and spin gracefully like two ‘ballerina sisters’.

Explanation:
You are using the same principle to operate your spinners that helicopters use to fly. The folded end of the paper is a little heavier than the rest of the piece, and this weight keeps the end always pointing downwards. The rotating paper wings fall against a greater amount of air than if they did not rotate. This decreases the speed at which the device drops, keeping it aloft for a longer period of time.

4 Difference in Weight
Things Required:
Basketball
Air pump
Scientific scale (one that shows grams or fractions of ounces)
Directions:
1. Pump up a basketball very hard. You can use a bicycle pump if you have the proper needle for inflating sports equipments.
2. Now weigh the basketball on the scientific scale. Your science classroom probably has this type of scale. Ask your teacher to show you how to use it.
3. Let all of the air out of the basketball and weigh it again. This time it weighs less. Can you explain why?

Explanation:
Did you know that air has weight? Even though air does not weigh very much compared to the objects that we normally place on scales, you saw the slight difference between an empty basketball and one that was pumped up. This difference in weight was due to the amount of air inside the ball.
There is a layer of air over the entire earth, and it, too, has weight, exerting pressure on all of us.