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Questions and Answers
What are forces that can act over a distance explained by?
What are forces that can act over a distance explained by?
- Magnetic attraction
- Electric charge
- Fields (correct)
- Physical contact
What are two examples of fields mentioned in the text?
What are two examples of fields mentioned in the text?
- Water fields and air fields
- Gravity fields and light fields
- Sound fields and heat fields
- Electric fields and magnetic fields (correct)
How can we map out magnetic fields according to the text?
How can we map out magnetic fields according to the text?
- Using a microscope
- Using iron filings (correct)
- Using a ruler
- Using a camera
What types of metal are attracted by magnets according to the text?
What types of metal are attracted by magnets according to the text?
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What do objects with a positive or negative electric charge produce according to the text?
What do objects with a positive or negative electric charge produce according to the text?
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What causes objects to become charged?
What causes objects to become charged?
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What happens when like charges repel each other?
What happens when like charges repel each other?
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What can make the magnetic field of a magnet stronger?
What can make the magnetic field of a magnet stronger?
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What is required to turn an ordinary piece of wire into an electromagnet?
What is required to turn an ordinary piece of wire into an electromagnet?
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How do devices with speakers, like phones and earbuds, produce sound?
How do devices with speakers, like phones and earbuds, produce sound?
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