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Step 1: Ã¥À» º¸Áö ¾Ê°í Å×ÀÌÇÁ¸¦ ÅëÇØ ¸ÕÀú µè´Â´Ù.
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Unit 1
1. Why do you see rainbow colors in oily water?
(¿Ö ±â¸§ ¶á ¹°¿¡¼´Â ¹«Áö°³ »öÀÌ º¸À̳ª?)
2.Does it take more energy to keep an empty refrigerator cold than it does to keep a full refrigerator cold?
(ÅÖ ºó ³ÃÀå°í¸¦ Â÷°©°Ô ÇÏ´Â °ÍÀÌ ²Ë Âù ³ÃÀå°í¸¦ Â÷°©°Ô ÇÏ´Â °Íº¸´Ù Àü±â°¡ ´õ µé±î?)
3.How does the air bag work?
(¿¡¾î¹éÀº ¾î¶»°Ô ÀÛµ¿Çϳª?)
4.Why does the ball go farther when it is hit with an aluminum bat?
(¾Ë·ç¹Ì´½ ¹æ¸ÁÀÌ·Î °øÀ» Ä¡¸é ¿Ö ´õ ¸Ö¸® ³¯¾Æ°¥±î?)
5. Why is the sky blue?
(¿Ö ÇÏ´ÃÀº ÆĶö±î?)
6.How are rainbows made?
(¹«Áö°³´Â ¾î¶»°Ô ¸¸µé¾îÁú±î?)
Review
Unit 2
1.Why does a flame always burn upwards?
(¿Ö ºÒ²ÉÀº À§·Î Å»±î?)
2.How are rechargeable batteries recharged?
(ÀçÃæÀü ¹èÅ͸®´Â ¾î¶»°Ô ÀçÃæÀüµÉ±î?)
3. Why do boomerangs come back to you?
(¿Ö ºÎ¸Þ¶ûÀº ´Ù½Ã µ¹¾Æ¿Ã±î?)
4. How do you make an atom bomb?
(¾î¶»°Ô ¿øÀÚÆøźÀ» ¸¸µé ¼ö ÀÖÀ»±î?)
5. Why does a spinning propeller or a wheel look like it is going backward?
(¿Ö µ¹°í ÀÖ´Â ÇÁ·ÎÆç·¯³ª ¹ÙÄû´Â µÚ·Î °¡´Â °Íó·³ º¸Àϱî?)
6. How does an X-ray photograph your bones but not the surrounding flesh?
(X·¹ÀÌ´Â ¾î¶»°Ô ÁÖº¯ÀÇ »ìÀ» »©°í »À¸¸ ÂïÀ» ¼ö ÀÖÀ»±î?)
Review
Unit 3
1. Is it true that the UK is sinking in the South East?
(¿µ±¹ÀÌ ³²µ¿ÂÊÀ¸·Î °¡¶ó¾É°í ÀÖ´Â °ÍÀº »ç½ÇÀϱî?)
2. How do you extract calcium from its ore?
(¾î¶»°Ô ±¤¼®¿¡¼ Ä®½·À» ÃßÃâÇϴ°¡?)
3. What are the biggest and smallest volcanoes?
(°¡Àå Å« È»ê°ú °¡Àå ÀÛÀº È»êÀº ¹«¾ó±î?)
4. Why did the dinosaurs become extinct?
(°ø·æÀº ¿Ö ¸êÁ¾Çߴ°¡?)
5. What is the altitude of the Earth s magnetic field and how strong is it?
(ÀÚ±¸ ÀÚ±âÀåÀÇ °íµµ´Â ¾ó¸¶³ª µÇ¸ç ¾ó¸¶³ª °ÇÑ°¡?)
6. How can scientists measure the weight or mass of a planet?
(°úÇÐÀÚµéÀº ¾î¶»°Ô Ç༺ÀÇ ¹«°Ô¿Í Áú·®À» ÃøÁ¤ÇÒ±î?)
Review
Unit 4
1. How many square miles of the Earth are we able to live on?
(Áö±¸¿¡¼ ¿ì¸®°¡ »ì ¼ö ÀÖ´Â ¸éÀûÀº ¸î Æò¹æ ¸¶ÀÏÀ̳ª µÉ±î?)
2. How did scientists name the dinosaurs?
(°úÇÐÀÚµéÀº ¾î¶»°Ô °ø·æÀÇ À̸§À» ºÙÀϱî?)
3. How do we know what is inside the earth?
(Áö±¸ ¾È¿¡ ¹«¾ùÀÌ ÀÖ´ÂÁö ¾î¶»°Ô ¾Ë±î?)
4. How is the Earth s magnetic field produced?
(Áö±¸ÀÇ ÀÚ±âÀåÀº ¾î¶»°Ô ¸¸µé¾îÁö³ª?)
5. How do volcanoes fill up?
(È»êÀº ¾î¶»°Ô ä¿öÁö³ª?)
6. Do diamonds come from coal?
(´ÙÀ̾Ƹóµå´Â ¼®Åº¿¡¼ ³ª¿Ã±î?)
Review
Unit 5
1. Why can dogs be fed vegetarian diet and cats cannot?
(¿Ö °³´Â ä½Ä »ç·á¸¸À¸·Î ±â¸¦ ¼ö Àִµ¥, °í¾çÀÌ´Â ±×·² ¼ö ¾øÀ»±î?)
2. How is DNA used to identify a suspect?
(¿ëÀÇÀÚÀÇ ½Å¿øÀ» È®ÀÎÇÏ´Â µ¥ DNA¸¦ ¾î¶»°Ô È°¿ëÇÒ±î?)
3. What is a headache?
(µÎÅëÀº ¹«¾ùÀϱî?)
4. Is it harmful to microwave food?
(À½½ÄÀ» ÀüÀÚ·¹ÀÎÁö·Î Á¶¸®Çϰųª µ¥¿ì´Â °ÍÀº Çطοï±î?)
5. How do you get skin cancer from the sun?
(ÇÞºµÀÌ ¾î¶»°Ô ÇǺξÏÀ» ÀÏÀ¸Å³±î?)
6. How does HIV become AIDS?
(HIV´Â ¾î¶»°Ô AIDS°¡ µÇ´Â°¡?)
Review
Unit 6
1. Why do racing cars have fat tires?
(¿Ö °æÁÖ¿ë Â÷¿¡´Â ±¤Æø ŸÀ̾ ÀåÂøÇÒ±î?)
2. How does a soft drink machine drop a can when you place money in it?
(µ·À» ³ÖÀ¸¸é û·® À½·á ÀÚµ¿ ÆǸűâ´Â ¾î¶»°Ô ĵÀ» ¶³¾î¶ß¸±±î?)
3. How does a laser speed gun work?
(·¹ÀÌÀú ½ºÇÇµå °ÇÀº ¾î¶»°Ô ÀÛµ¿ÇÒ±î?)
4. Why does a car stop more quickly on a dry road than on a wet road?
(¿Ö Â÷´Â Á¥Àº µµ·Î¿¡ ºñÇØ ¸¶¸¥ µµ·Î¿¡¼ ´õ »¡¸® Á¤ÁöÇÒ±î?)
5. How do surgeons see the brain without cutting into it?
(¿Ü°ú ÀÇ»çµéÀº ¾î¶»°Ô ³ú¸¦ Àý°³ÇÏÁö ¾Ê°í ³ú¸¦ º¼ ¼ö ÀÖÀ»±î?)
6. How do automated-teller machines (ATMs) work?
(Çö±Ý ÀÚµ¿ ÀÎÃâ±â´Â ¾î¶»°Ô ÀÛµ¿ÇÒ±î?)
Review
Unit 7
1. Why do doughnuts have holes?
(µµ³Ó¿¡ ¿Ö ±¸¸ÛÀÌ ÀÖÀ»±î?)
2. How much does it take to decide if we like someone?
(´©±º°¡¸¦ ÁÁ¾ÆÇÏ´ÂÁö ¾Æ´ÑÁö ÆÇ´ÜÇϴµ¥ ¾ó¸¶ÀÇ ½Ã°£ÀÌ °É¸±±î?)
3. Why are traffic lights red, yellow and green?
(¿Ö ½ÅÈ£µîÀº »¡°, ³ë¶û, ÃÊ·Ï»öÀϱî?)
4. Why do we get a shock from electricity?
(¿Ö °¨ÀüÀÌ µÉ±î?)
5. Is it possible to make artificial blood?
(Àΰø Ç÷¾×À» ¸¸µå´Â °ÍÀº °¡´ÉÇÒ±î?)
6. How do they select donors at a sperm bank?
(Á¤ÀÚ ÀºÇà¿¡¼´Â ±âÁõÀÚ¸¦ ¾î¶»°Ô ¼±ÅÃÇÒ±î?)
Review