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826

826. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. Key concepts/skills: Level 1: Define key vocabulary.

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826

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  1. 826 Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet.

  2. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. Key concepts/skills: Level 1: Define key vocabulary. Level 2: Know the characteristics of the earth’s, a magnet’s, and an electromagnet’s magnetic fields. Level 3: Given the characteristics of a magnet field, determine if the magnetic field is from the earth, a magnet or an electromagnet. Given a particular magnetic field, recognize the characteristics specific to that particular type of magnetic field.

  3. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. Key vocabulary Magnet Electromagnet Magnetic field North pole South pole Domains Soloniod

  4. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. • Magnetic Fields • Magnetic field – the area surrounding a magnetic object in which the • magnetic force exists • B. The Earth’s Magnetic Field • The earth behaves as if it has a bar magnet running through it. • The North and South poles of the magnet are near the Earth’s North and South poles of the Earth • Although the magnetic field is strongest near the poles the Earth’s magnetic field does surround the entire planet • The Earth’s magnetic field traps and deflects particles from the sun that might otherwise be harmful to life. • The Earth’s magnetic field has reversed several times in the past!

  5. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. • C. A Bar Magnet • Because of the way the domains (groups of charges) are aligned, a bar magnet has a north and south pole just like the earth • The field is strongest at the poles but surrounds the entire magnet • The magnetic field of a bar magnet is constant

  6. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet. • D. An Electromagnet • An electromagnet is a wire with coils (a solenoid) that has an electric current running through it and an iron core inside the coil. • 2. Adding coils to the wire, adding more current, and adding an iron core greatly increases the magnetic field. • 3. The magnetic field of an electromagnet has North and South poles that center around each end of the iron core. • 4. Not constant but varies with current strength, number of coils, and size of the iron core.

  7. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet.

  8. Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet.

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