Passage 1 How fast can humans run Passage

Passage 1 How fast can humans run?

Passage 1 How fast can humans run? Usain Bolt is a famous runner. During the 2008 and 2012 Olympics, he became known as the fastest human alive. Scientists figured out that Usain Bolt could run at a speed of around 23 miles per hour. They did this by averaging the times from his fastest races. The average human can run about 8. 5 miles per hour. Usain Bolt run close to 23 miles per hour. He is really fast. However, even Usain Bolt’s running speed is not very fast compared to how fast scientists think humans will one day be able to run. Scientists have found that humans should one day be able to reach 40 miles per hour.

They did this by looking at how the human body is made. They also looked at how much force its muscles can take. Of course, how fast humans are able to run depends on many different factors. A human’s body weight, height, and muscle strength, all play a role in determining how fast someone can run. Outside factors, such as the speed of the wind and the temperature can also affect a person’s speed. Scientists must also consider the 5 type of ground a person runs on. Different surfaces require different amounts of force and muscle strength. To reach 40 miles per hour, the runner and the conditions must be perfect. This is nearly impossible. For now, Usain Bolt’s 23+ miles per hour speed is incredibly impressive. Although the cheetah, which can run up to 70 miles per hour, might call this speed incredibly slow.

Activity 1 Page 7 -8 -9 Answer Key 1 - b 2 - c 3 -b 4 -a 5 -b

Olympic Rings

Olympic Rings One of the most recognized symbols of the Olympic games is the Olympic Rings. The rings were designed by French baron Pierre de Coubertin. They have been a part of the Olympics since 1916. But the rings are more than just a set of pretty circles. Pierre de Coubertin designed them intentionally. According to Pierre de Coubertin, the Olympic Rings were designed to represent the five inhabited continents of the world that competed in the Olympic games when the image was designed. Some think that each ring represents an individual continent. However, that is not true.

Instead, all of the rings are connected. This shows the spirit of the Olympics. The rings represent bringing together people from around the world. The six colors that appear in the Olympic Rings logo serve a similar purpose. They represent the main colors found on the flags of all of the nations that compete in the Olympics.

Activity 2 Page 12 -13 -14 Answer Key 1 - a 2 - b 3 -b 4 -a 5 -a

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