Why Does The Moon Shine
In ancient times, the moon was worshipped as a goddess who ruled the night. Since those ancient days, man has learned a great deal about the moon—and …
In ancient times, the moon was worshipped as a goddess who ruled the night. Since those ancient days, man has learned a great deal about the moon—and …
The fig is one of the most remarkable fruits in the world. It has been valued as food by man since prehistoric times. At one time it …
We speak of ordinary light as being “white”; we call it white light, or sunlight. But this light is really a mixture of colors. When Sunlight strikes …
Why Are The Colours In A Rainbow Arranged As They Are Read More »
Ice is solid. When the temperature is cold enough, liquid water be- comes into solid ice. Water expands greatly when it freezes. Ten liters of water make …
The outside of the earth is a crust of rock that is about 10 to 30 miles thick. When we go down into this crust. we find …
The only reason a day has 24 hours in it is that man has decided he would like to work out a time that way. Nothing occurs …
When we look up at the sky, we do not see too many differences among the stars. Some look a bit bigger, some are brighter than others. …
The outer portion of a woody stem or root is called “bark”. Sometimes it is hard to tell how much of the stem should be called bark. …