drop a paper of A4 size and a piece of wood or plastic about 2 3 inches long , from a height more than 10 feet note the time for both to hit the ground. now repeat the experiment by folding the paper once, twice.... why every time the travel time reduce for paper and remain the same for wood or plastic piece . does the paper at any stage hit the ground before the wood or plastic piece if yes, then why
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PREFACE
Paper is one of the simplest, versatile, available and least expensive materials known to humankind. Although most
commonly used for writing, packaging, and wrapping, it is also perfect for doing science experiments. Humans have
used paper or paper-like substances for thousands of years. The word paper comes from the word papyrus, a plant
from which the ancient Egyptians produced a material like paper to write upon. Nowadays, wood pulp from trees is the
usual source of paper fibers. To make paper, these fibers are mixed with a large amount of water. Small amounts of
additives such as glue and clay are mixed in, and water is removed through wire screens. The paper fibers deposited on
the screens are dried, smoothed, and cut to give many types, thicknesses, and sizes of paper.
In this book, you will learn how to do 100 exciting science experiments with paper. Experiments are organized into
these categories: air, balancing, chemistry, electricity and magnetism, flying things, heat, light, motion and inertia, noiseand sound-makers, topology, water, and other experiments.
This book is easy enough for children to do, but can be enjoyed by other people as well. The experiments in 100
Simple Science Experiments with Paper are fun, easy, and safe to do, and can be performed using materials and
equipment commonly found around the house. Teachers, parents, and children alike will delight in discovering the many
ways in which paper can be used to learn and enjoy science at home and in the classroom.
TYPES OF PAPER
There are many different sizes and weights of paper. Paper size ranges from small, 3x5 inch (7.5 x 13 cm) scratch
pads to medium, 8.5 x 11 inch (22 x 28 cm) school notebook paper, to large construction paper, artist’s paper, and
newsprint. You will find these and many other sizes and kinds of paper at your local grocery, variety, arts & crafts, or
hobby supply store.
Paper weight ranges from light to heavy. The heavier and thicker the paper, the stronger it is. Lightweight paper
(such as onionskin or erasable typewriter paper) is good for activities where light weight is important, such as making
airplanes or kites. Medium-weight paper (which includes notebook paper, scratch pads, and computer printer paper)
is fairly strong and not too heavy. It can be used for most of the experiments in this book. Heavy-weight paper (for
example, index cards or cardboard) is good for construction activities where strength and stability are important, such
as building paper towers, and for balancing objects.
The types of paper used in this book are:
• Brown lunch and grocery bags
•Cardboard (packing boxes, cereal boxes, etc.)
•Cardboard oatmeal cartons (cylinder-shaped)
•These are standard sizes in the US. Paper sizes in other countries are slightly different in size. Use the closest size
if these aren’t available to you.
• Cardboard tubes from toilet paper or paper towels
• Computer printer paper
• Coffee filters
• Construction and drawing paper
• Crepe paper
• Dollar bill (or other paper money)
• Index cards (small and large sizes)
• Manila file folders
• Newspaper
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