By Jim Wiese
Dig into the technological know-how of precedent days and unearth notable discoveries!
* have you puzzled the place paper comes from, who made the 1st identified maps, or how the traditional Egyptians have been capable of construct the pyramids?
* do you want to make your personal sundial, become aware of tips to discover earthquakes, or learn how to write in hieroglyphics?
* Are you trying to find nice principles to your subsequent technology reasonable undertaking?
in the event you spoke back "Yes" to any of those questions, then old technological know-how is for you! From Greek lighthouses and Roman bridges to chinese language kites and Mesopotamian cleaning soap, you are going to examine many of the maximum clinical 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 crops, why tools make assorted sounds, how fireworks get their explosive energy, and masses extra. all the tasks are secure and simple to do, and all you wish is daily stuff from round the condo. So step again in time and take an grand trip with old technology!
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Additional info for Ancient Science. 40 Time-Traveling, World-Exploring, History-Making Activities for Kids
Try this activity to learn more about what they did. 5-m) or longer piece of ﬂexible, plastic aquarium air hose deep sink or large tub water Procedure 1. Use two pieces of string to tie the rock to the mouth of the plastic jar so that the rock hangs about 2 inches (5 cm) directly below the center of the jar’s opening. Secure the string in place with tape. 2. Insert one end of the tubing into the jar so it extends into the bottom of the jar. Bend the tubing near the mouth of the jar and tape it to the outside of the jar.
Finally, add other places you think are important. For example, draw in your friends’ houses, local stores, and so on. More Fun Stuff to Do 1. Compare your map to a professional map of your town. How are they the same? How are they different? 2. Give your map to a friend who doesn’t know your neighborhood. Can he or she understand your symbols and use your map to get to a location pictured on it; for example, to get to a local park? qxd 12/12/02 6:44 PM Page 28 Explanation You should be able to make a simple map of your neighborhood.
Use the protractor to make sure that the triangle is exactly 90 degrees to the base. 8. Take your sundial outside on a sunny day. Use the compass to align your sundial so that it points north, as shown below. Compare the time on your sundial to the real time. How accurate is it? More Fun Stuff to Do This sundial will be more accurate at latitudes from 40° N to 50° N. If you live outside of those latitudes, how can you correct your sundial? Try methods such as tilting the sundial or changing the angles between hour marks on the sundial face.