nusquestionscity1

You can get a pretty good idea of what causes an earthquake from thinking about what happens during an earthquake. During an earthquake, there is a trembling of the ground. It is this trembling of the earth that may cause buildings to fall. So an earthquake is a trembling or vibration of the earth’s surface. What … Read more

In February 1943, in the middle of a cornfield in Mexico, people saw a rare and amazing thing taking place. A volcano was being born! In three months it had formed a cone about 300 meters high. Two towns were destroyed and a wide area damaged by the falling ash and cinders. What makes a … Read more

There are several species of nettle, not all of which have stinging hairs. Most people, however, have suffered a nettle-sting at one time or another; and of those nettles that do sting, the common nettle and the  Roman nettle are the best known. The latter has the most painful sting of all nettles. The stinging … Read more

Glaciers are not a rarity today. The most common type is called “valley glaciers”. In the Alps alone there are more than 1,200 valley glaciers, and in the high mountains of southern Alaska, there are tens of thousands of them. Valley glaciers creep downward like great rivers of ice snowy The source of the large quantities of … Read more

The coconut is the fruit of the coconut palm tree. The husk of the coconut is there so that the inner seed, or nut, will be cushioned when it falls to the ground. This nut is about 8 to 20 centimeters long. Just inside the hard, dark shell is a layer of dense, white meat. … Read more