By Jim Wiese
Dig into the technology of precedent days and unearth notable discoveries!
* have you puzzled 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 find out how to observe earthquakes, or discover ways to write in hieroglyphics?
* Are you searching for nice rules on your subsequent technology reasonable undertaking?
when you spoke back "Yes" to any of those questions, then historical technology is for you! From Greek lighthouses and Roman bridges to chinese language kites and Mesopotamian cleaning soap, you will examine many of the maximum clinical 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 assorted sounds, how fireworks get their explosive strength, and masses extra. the entire initiatives are secure and straightforward to do, and all you would like is daily stuff from round the condominium. So step again in time and take an awesome trip with historic technological know-how!
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Additional resources for Ancient Science. 40 Time-Traveling, World-Exploring, History-Making Activities for Kids
The shadow clock was easier to make, but was less accurate due to seasonal changes. The Egyptians were the ﬁrst to split the time period between sunrise and sunset into 12 equal parts. They also divided the night into 12 equal parts. From this division came the length of time we call the hour and the fact that a day has 24 hours. qxd 12/12/02 7:00 PM Page 43 PROJECT 5 Hieroglyphics he ancient Egyptians may have had the ﬁrst Twritten language. E. The Sumerians developed their own written language, called cuneiform, at about the same time.
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. Hold one cup in each hand and compare the weight of the two cups. What do you notice? Explanation The weight of the rock when submerged (under water) will be less than its weight in air. When you weigh the water that overﬂowed the pot when the rock was submerged, you will ﬁnd that the weight will be the same as the difference between the weight of the rock in air and the weight of the rock in water.
S. coins (penny, nickel, dime, and quarter) Canadian coins (penny, nickel, dime, and quarter) bar magnet Procedure 1. S. coins on the table. S. coin, place the Canadian coin of the same value. 2. Observe each pair of coins. How are they the same? How are they different? 3. S. coins. What happens? 4. Take the magnet and touch each of the Canadian coins. What happens this time? More Fun Stuff to Do Try testing coins from other countries, such as Mexico and England. Which coins are magnetic? qxd 12/12/02 6:44 PM Page 30 Explanation While the coins of the United States and Canada look similar, several Canadian coins—the nickel, dime, and quarter—are magnetic, while the same coins from the United States are not.
Ancient Science. 40 Time-Traveling, World-Exploring, History-Making Activities for Kids by Jim Wiese