2Story

Astronomers can tell just how hot the surface of the moon gets. The side of the moon toward the sun gets two degrees hotter than boiling water. The night side reaches 243 degrees below zero. 

In an eclipse, the earth's shadow falls on the moon. Then the moon's temperature may drop 300 degrees in a very short time. 

A temperature change like this cannot happen on the earth. Why does it happen on the moon? Astronomers think that the surface of the moon is dust. On the Earth, rocks store heat from the sun. When the sun goes down, the rocks stay warm. But the dust of the moon cannot store heat. So when the moon gets dark, the heat escapes quickly. The moon gets very cold. 

How to write a lesson plan, prepared by shahla davudi

How to write a lesson plan, prepared by shahla davudi
عنوان: DocHow to write a lesson plan

عنوان: DocHow to write a lesson plan
عنوان: Doc

Story

Who was smarter?

A blonde and a lower sit next to each other on a plane. 

The lower asks her to play a game. 

If he askd her a question that she didn't know the answer to,she would have pay him five dollars ; And every time that the blonde asked the lower a question that he didn't know the answer to, the lower had to pay the blonde 50 dollars. 

So the lower asked the  blonde his first question. ' what is the distance the Earth and the nearest star?', without a word the blonde pays the lawyer five dollars. The blonde than asks him.' what goes up a hill with four legs and down hill with 3?', the lawyer think about it, but finally gives up and pays the blonde 50 dollars. The lawyer asked her finally about the reply, 'what was the reply? ' the blonde without any thinking pay him back 5 dollars!