Total Pageviews

Saturday, February 13, 2010

How does day turn into night?


As the Earth moves around the Sun. It also spins round on its axis. This means that different parts of the Earth are lit up at different times. When our art of the Earth is lit up it is daytime for us. As we move round, away from the Sun, it becomes dark and we can see the stars; this is night-time.

The sun appears to move across the sky, but in fact the Earth is moving around the Sun.

14 comments:

單存 February 20, 2010 at 3:00 AM  

生命中最美麗的報償之一便是幫助他人的同時,也幫助了自己。 ..................................................

聊天室 March 12, 2010 at 2:27 AM  

您的blog蠻不錯的耶,祝你快樂哦!期待您的更新!........................................

pass March 26, 2010 at 8:32 AM  

Constant dripping wears away the stone. 滴水穿石!加油! ....................................................

佳慧 April 4, 2010 at 11:44 PM  

分享的朋友,在精不在多,分享的幸福就在下一秒 ..................................................

劉于名 April 4, 2010 at 11:45 PM  

旁觀自己的悲傷是解脫,主觀自己的悲傷是更加悲傷 ..................................................

水憲妤慧 April 15, 2010 at 1:26 AM  

你要教你的孩子走路;但是,應由孩子自己去學走路. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ImogeneL22211 April 29, 2010 at 1:49 AM  

一棵樹除非在春天開了花,否則難望在秋天結果。......................................................

陽峰 May 17, 2010 at 9:04 PM  

動不一定每一次都成功,但坐而不行,絕無任何成功可言.............................................

VincenzoJ詩婷 May 27, 2010 at 5:22 PM  

天下沒有走不通的路,沒有克服不了的困難,沒有打不敗的敵人。.............................................

佩璇 June 3, 2010 at 1:39 AM  

如果相遇.你會感到相知.那麼.有一種習慣叫做陪伴;如果陪伴.你會感到珍惜.那麼.有一種甜蜜叫做存在!........................................