Category Archives: WHY?
33.WHY DOES THE MOON FOLLOW US WHEN WE DRIVE?
The moon doesn’t look as if it’s very far away, but its distance from the earth averages 239,000 miles. The diameter of the moon is 2,160 miles, or less than the distance across the United States. But when the moon is observed with a very large telescope, it looks as if it were only about 200 miles away.
Because the moon seems so close and big to us, we sometimes forget that 239,000 miles is quite a distance away. It is this great distance that explains why the moon seems to follow us when we drive in a vehicle and look up at it.
9.WHY DOES ICE CRACK PIPES?
Many a student who goes to college complains, “Why do I have to study physics and science, I’ll never use these things.” Of course, such people are quite wrong about “not using” physics and science. The fact is that whether we know it or not, we all use the laws of physics in everyday life many, many times.
8. WHY CROW IS A HARMFUL BIRD?
We have a good feeling about most birds, and consider them to be a friend to man. Yet when it comes to the crow, we have quite a different attitude. We know that the farmer sets up “scarecrows,” and hopes to keep these birds as far away as possible. While crows are somewhat helpful as scavengers, they are really quite destructive. To begin with, crows are expert thieves. They not only steal the eggs in other birds nests, but they often carry off the young! They even invade barnyards in search of hens’ eggs, and will malice off with newly hatched chicks if they can catch them. The worst complaint against crows is the destruction they do to crops. They simply eat up so many crops, and destroy so many cornfields, that the farmer considers crows one of his worst enemies.
