In sunny weather, we can all find our own shadow standing in the sun. Are you the same shadow as your little friend? Length and height of shadow

1. Choose three points first, three students stand on three points respectively, and the fourth student measures the shadow length of the three students with a meter ruler.

2. Meter ruler

3.

According to the analysis, we can draw the conclusion that the length of shadow is proportional to the height of the object. We can measure the height of the school flagpole. The specific method is as follows: find an object with good height measurement, such as a short wall and a vertical pole, and measure the shadow length of the flagpole at the same time. According to the above principle, the shadow length of the flagpole is several times that of the object, so the height of the flagpole is several times that of the object.

Do this experiment at different times, and the conclusion always holds. Although the shadow length of an object has changed at different times, the conclusion that the shadow length is proportional to the height of the object is unchanged. We can use this method to measure many buildings that are difficult to measure, such as tall buildings, telephone poles, chimneys, trees and so on.

6. You can measure your own shadow. Methods: Find a better spot and lay one meter flat on the ground along the shadow direction. Stand at the starting point and observe the length of the shadow on the meter scale.