Explore Transportation!: 25 Great Projects, Activities, by Marylou Morano Kjelle, Bryan Stone

By Marylou Morano Kjelle, Bryan Stone

Permitting childrens to trip via time and all over the world, this pleasing consultant summarizes the historical past and technology of transportation. From camels and jet engines to pigeons and submarines, this instruction manual examines the weird and interesting ways in which civilizations outdated and new have moved humans, details, and gadgets from position to place. Twenty-five easy-to-follow tasks are incorporated, requiring minimum grownup supervision and essentially utilizing universal family items and recycled offers. actions diversity from creating a selfmade compass and flying a mini-parachute to interpreting Morse code and finding the North superstar. Combining a hands-on aspect with riddles, jokes, enjoyable evidence, and cartoons, this all-inclusive activity book journeys from the evolution of the wheel to the discovery of the spaceship, demonstrating that mind's eye can spark significant alterations on the earth and past.

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39 Explore Transportation! Christopher Columbus Christopher Columbus sailed to the New World in 1492 on two different types of ships. The Santa Maria was a cargo ship called a carrack. A carrack had three or four masts and a high stern. This made it good for carrying cargo on long voyages. The Niña and Pinta were smaller ships called caravels. A caravel was a broad ship with both square and triangular sails. Caravels varied in size between 45 and 100 feet (14–30 meters) in length. Trinidad tried to return to Spain but was captured by the Portuguese and sunk in a storm.

Supertankers A tank ship or “tanker” is a special ship that transports liquids—oil, chemicals, and liquefied natural gas. They weigh more than half a million tons and transport millions of gallons of oil. The largest ship in the world, the Nock Nevis, is 1,504 feet (458 meters) long and 226 feet (68 meters) wide. She is so large that when full, she can’t pass through the 32-mile-wide English Channel. Her cargo weighs her down so much she can’t float in the shallow channel. 46 What Floats? What Sinks?

How the Wheel Changed Transportation This eventually led to the development of the sledge, a sled pulled over logs. The sledge made moving things easier. But it wasn’t faster because the logs had to be transferred from the back of the sled to the front of the sled to keep things moving. The weight of the loads made grooves in the middle of the logs. This led to another improvement: the axle. An axle is a thin rod on which a wheel can rotate, that is separate from the wheel. When someone attached the axle to a wooden box, the cart was born.

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