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PHY_10_18_V1_P_Applications of Magnetic Materials.pptx
Applications of Magnetic Materials
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Learning objective
To analyse modern scopes of using magnetic substances (neodymium magnets, sensors, seismographs, metal detectors) and to discuss the tendency of their application;
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(G) Group work Applications of Magnetic Materials
GROUP 1: Neodymium magnets
GROUP 3: Magnetic seismographs
GROUP 4: Metal detectors
Quick Quiz Part 1
1. Neodymium magnets are a mixture of neodymium with _____ and _____.
Iron, boron
Iron, barium
Iridium, boron
Iridium, barium
Answer
A
2. Which of the following does NOT use neodymium magnets?
Earrings
Motors
Children's toys
Batteries
Answer
D
3. Neodymium is mixed with the element _____ to form didymium glass.
Iridium
Boron
Praseodymium
Potassium
Answer
B
Quick Quiz Part 2
Why Neodymium magnets are so strong?
What is the use of magnetic sensor?
What are the use of Magnets in a seismograph?
Reflection
What has been learned
What remained unclear
What is necessary to work on
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