History of Sails and Sailing

History of Sails and Sailing

Catching the Wind with Sails

History

Ancient Egyptians developed the first sails around 4,000 B.C. using papyrus reeds.

http://www.gutenberg.org/files/17322/17322-h/images/080.jpg

HistoryAncient Greek and Roman ships used cotton

cloth and leather straps to make sails.

http://www.laits.utexas.edu/moore/sites/laits.utexas.edu.moore/files/images/9907140508_1024.preview.jpg

History

Sailing became used for trade and transportation throughout Europe, Asia, and northern Africa.

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Mast

A mast is the tall, vertical pole that supports the sail.

http://upload.wikimedia.org/wikipedia/commons/7/79/Balclutha_main_topgallant_mast.jpg

SpeedSpeed is an objects change in position over time.

How speedy you are is how much change you have in a set amount of time.

http://www.lookpictures.net/photos/registered_photos/7799-speedometer.jpg

Length

In this experiment, length will be the distance traveled in centimeters or inches.

http://simplyzesty.com/wp-content/uploads//2011/07/measuring_success.jpg

BalanceThe ability to be stable; equally distributed forces. In sail design, does the boat rock side

to side, or stay calm and balanced?

http://breakingmuscle.com/sites/default/files/images/03/12/2011_-_1919/1balance.jpg

Sail

Any type of surface used to move a vessel

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MaterialAnything made of matter. For this experiment, materials will be anything available to build your

sail.

http://cdn1.novadevelopment.com/images/completeMaterials01_tcm23-144221.jpg http://www.archkidecture.org/buildingsquares/bldgsquares_images/4materials.jpg

Predict

Tell what you think will happen

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PropertyCharacteristics – For this experiment, properties

will be any characteristic of the materials used (hard, soft, opaque, etc.)

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absorbent SOFT

plush

Test

Something used to determine ability or success