Jim Wiese's Ancient Science: 40 Time-Traveling, World-Exploring, PDF

By Jim Wiese

ISBN-10: 0471215953

ISBN-13: 9780471215950

Dig into the technological know-how of precedent days and unearth notable discoveries!
* have you questioned the place paper comes from, who made the 1st recognized maps, or how the traditional Egyptians have been in a position to construct the pyramids?
* do you want to make your personal sundial, realize the right way to discover earthquakes, or learn how to write in hieroglyphics?
* Are you trying to find nice rules in your subsequent technological know-how reasonable venture?

If you spoke back "Yes" to any of those questions, then historic technology is for you! From Greek lighthouses and Roman bridges to chinese language kites and Mesopotamian cleaning soap, you'll examine the various maximum medical discoveries and the folks who brought them to the area. Dozens of fun-packed actions assist you see for your self how the earliest people cultivated vegetation, why tools make diversified sounds, how fireworks get their explosive strength, and masses extra. all the initiatives are secure and simple to do, and all you would like is daily stuff from round the residence. So step again in time and take an awesome trip with historical technological know-how!

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Additional info for Ancient Science: 40 Time-Traveling, World-Exploring, History-Making Activities for Kids

Sample text

A machine may transfer forces from one place to another. For example, the chain of a bicycle transfers the force from the pedals to the rear wheel. 2. A machine may change the direction of a force. For example, a rope thrown over a tree branch can be used to lift a box. The box is lifted up by you pulling down on the opposite end of the rope. 3. A machine may multiply speed or distance. 4. A machine may multiply force. The amount by which a machine can multiply a force is called mechanical advantage.

With the wooden vehicle on the table, pull the other end of the spring scale, moving the block along the table. Measure and record the force needed to move the block. With which method is it easiest to move the wooden block? Wire axle glued in place 24 Straw Cardboard wheel Explanation It will take the most force to slide the wooden block across the table. Although rolling the block on the plastic straws takes less force, the block quickly reaches the end of the straws, and the straws would have to be moved in order to move the block farther.

M. M. M. M. 4. Again using the protractor, measure and mark the angles listed below to the right of the 12:00 line. Complete the lines as shown in the diagram and label each line with the corresponding time. M. M. M. M. M. 5. Use the ruler and pencil to draw a diagonal line on the 8-inch (20-cm) square of thin cardboard. 6. Use the scissors to cut along the line, creating two cardboard triangles. 7. Tape one cardboard triangle along the 12:00 line on the sundial base so that it is perpendicular to the base.

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Ancient Science: 40 Time-Traveling, World-Exploring, History-Making Activities for Kids by Jim Wiese

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