Login  l  Register  l  Sitemap  l  Subscription  l  Media Kit 
 
 
 
  Learning Times > µ¶ÇØ/¹ø¿ª > Discovery English
 
  Date : 2010-08-23
Not going too far
 
 

<´ÙÀ½ ¾îÈÖ¸¦ Ȱ¿ëÇÏ¿© ºóÄ­À» ä¿öº¸¼¼¿ä>
 
( a force of attraction, As a result, in balance, gravity )
 
The moon is always moving.
´ÞÀº ¾ðÁ¦³ª À̵¿ÇÏÁö¿ä.
 
In fact, the moon travels in space at about 3,700 kilometers per hour.
½ÇÁ¦·Î ´ÞÀº ÇÑ ½Ã°£¿¡ 3,700ų·Î¹ÌÅ͸¦ ¿òÁ÷ÀÔ´Ï´Ù.
 
Then why is the moon still orbiting Earth and not traveling off into space?
±×·¯¸é ¿Ö ´ÞÀº Ç×»ó Áö±¸ÀÇ µÑ·¹¸¦ ¹þ¾î³ªÁö ¾Ê°í µµ´Â °ÍÀϱî¿ä?
 
The answer has to do with Earth¡¯s gravity.
ÇØ´äÀº Áö±¸ÀÇ Á߷°ú ¿¬°üÀÌ ÀÖ´ä´Ï´Ù.
 
Gravity is (1)__________________________.
Áß·ÂÀ̶õ ²ø¾î´ç±â´Â ÈûÀ» ¸»ÇÕ´Ï´Ù.
 
Earth¡¯s gravity pulls on the moon.
Áö±¸ÀÇ Áß·ÂÀº ´ÞÀ» ²ø¾î´ç±é´Ï´Ù.
 
Earth¡¯s gravity keeps the moon from flying off into space.
Áö±¸ÀÇ Áß·ÂÀº ´ÞÀÌ ¿ìÁÖ°ø°£À¸·Î ³¯¾Æ°¡´Â °ÍÀ» ¸·¾ÆÁÝ´Ï´Ù.
 
The pull of Earth¡¯s (2)____________ balances the speed of the moon¡¯s motion.
Áö±¸ÀÇ Áß·ÂÀÇ ²ø¾î´ç±èÀÌ ´ÞÀÇ À̵¿¼Óµµ°¡ ±ÕÇüÀ» ÀÌ·ç°Ô ÇÕ´Ï´Ù.
 
(3)__________________, the moon remains in orbit around Earth.
°á°úÀûÀ¸·Î ´ÞÀº Áö±¸ÀÇ ±Ëµµ¿¡ ¸Ó¹«¸£°Ô µÇ´Â °ÍÀÔ´Ï´Ù.
 
Think of it this way.
ÀÌ·± ½ÄÀ¸·Î »ý°¢ÇØ º¸¼¼¿ä.
 
Imagine that you have a ball tied to a string.
²öÀ¸·Î ¸Ç °øÀÌ ÀÖ´Ù°í »ý°¢Çغ¸¼¼¿ä.
 
Hold onto the end of the string.
°øÀÇ ³¡À» ºÙÀâ°í ÀÖ¾î¿ä.
 
Start spinning the ball around your head.
¸Ó¸® ÁÖÀ§·Î °øÀ» µ¹¸®±â ½ÃÀÛÇØº¸¼¼¿ä.
 
The ball will orbit your head.
°øÀº ¿©·¯ºÐÀÇ ¸Ó¸® ÁÖÀ§¸¦ ȸÀüÇϰÚÁö¿ä.
 
The string acts like gravity to keep the ball from flying away.
²öÀº °øÀÌ ³¯¾Æ°¡Áö ¸øÇϵµ·Ï ¸¶Ä¡ Áß·Âó·³ ÀÛ¿ëÀ» ÇÏ´Â °ÍÀÌÁÒ.
 
Now imagine that you cut the string while you are spinning the ball.
ÀÚ ÀÌÁ¨ °øÀ» µ¹¸®°í ÀÖ´Â Áß¿¡ ²öÀ» Àß¶ó³½´Ù°í »ó»óÇØº¸¼¼¿ä.
 
The ball¡¯s motion will send it flying away.
°øÀº ¸Ö¸® ³¯¾Æ°¡ ¹ö¸®°ÚÁö¿ä.
 
If there were no gravity, the moon would do the same thing.
Áß·ÂÀÌ ¾ø´Ù¸é ´Þµµ ÀÌ¿Í °°´ä´Ï´Ù..
 
But gravity and the motion of the moon are (4)______________, so the moon continues to orbit Earth. ±×·¯³ª Á߷°ú ´ÞÀÇ ¿òÁ÷ÀÓÀº ±ÕÇüÀ» ÀÌ·ç°í ÀÖ´ä´Ï´Ù. ±×·¡¼­ ´ÞÀº Áö¼ÓÀûÀ¸·Î Áö±¸ÀÇ µÑ·¹¸¦ µ¹°Ô µÇ´Â °ÍÀÌÁÒ.
 
Answers
(1) a force of attraction
(2) gravity
(3) As a result
(4) in balance
 

 
  Discovery Education ¼Û°íÀº Áß¾Ó´ëÇб³ ±³¼ö(www.discoveryeducation.com)

Top