Download Ancient Science. 40 Time-Traveling, World-Exploring, by Jim Wiese PDF

By Jim Wiese

Dig into the technology of precedent days and unearth striking discoveries!
* have you questioned the place paper comes from, who made the 1st recognized maps, or how the traditional Egyptians have been capable of construct the pyramids?
* do you want to make your individual sundial, realize the best way to observe earthquakes, or learn how to write in hieroglyphics?
* Are you searching for nice principles to your subsequent technology reasonable venture?

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

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Extra info for Ancient Science. 40 Time-Traveling, World-Exploring, History-Making Activities for Kids

Example text

Blow into the tube. What happens to the jar and rock this time? More Fun Stuff to Do Use an aquarium air pump to make the jar and rock move up and down. Design and build other ways to make the jar and weight move up and down. qxd 12/13/02 2:33 PM Page 56 Explanation When you release the closed end of the tubing, the jar and rock sink in the water. When you blow into the tube, the jar and rock rise up in the water and float to the surface. In this project, you have built a simple diving bell, a bell- or bucketshaped container that traps air inside when it’s put in water upside down.

What happens to the jar and rock this time? More Fun Stuff to Do Use an aquarium air pump to make the jar and rock move up and down. Design and build other ways to make the jar and weight move up and down. qxd 12/13/02 2:33 PM Page 56 Explanation When you release the closed end of the tubing, the jar and rock sink in the water. When you blow into the tube, the jar and rock rise up in the water and float to the surface. In this project, you have built a simple diving bell, a bell- or bucketshaped container that traps air inside when it’s put in water upside down.

12. Calculate the weight of the water by subtracting the weight of the jar by itself from the weight of the jar and water. 13. Compare the weight of the water in the jar to the difference in weight between the rock in the air and the rock in the water. What did you find? More Fun Stuff to Do Draw identical horizontal lines halfway up the outside of two Styrofoam cups. Set one cup on the surface of a tub of water. Add marbles to the cup until the water level reaches that mark. Fill the second cup with water until it reaches the same mark.

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