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	370   Directed Inquiry Explore How can static electricity affect objects? 372   How to Read Science Cause and Effect 373     You Are There! 374      Lesson 1 How does matter become charged? 375      Lesson 2 How do electric charges flow? 378      Lesson 3 What are magnetic fields? 382      Lesson 4 How is electricity transformed to magnetism? 386      Lesson 5 How is magnetism transformed to electricity? 390   Guided Inquiry Investigate What is an electromagnet? 394    Using Numbers to Represent Electrical Charges 396   Chapter 13 Review and Test Prep 398    William Gilbert 400