spi 0807:12.2 electromagnetism bell work jan 13, 2015 instructions a) the electromagnet shown below...
TRANSCRIPT
SPI 0807:12.2Electromagnetism
Bell Work
Jan 13, 2015
InstructionsA) The electromagnet shown below consists of 3 basic components.
(1) A solenoid, (2) An iron core, & (3) A batteryB) Draw this diagram on your own paper, and label these 3 items.
Instructions1) First click on "View" from the top-menu bar.2) Then click on "Slide Show" from the drop-down menu.3) Then use the right-arrow button on your keyboard to advance through this presentation.
Notes Science
Essential Question(s)What is a magnetic field? What are the similaritiesand differences between the Earth’s magnetic field andthe fields from permanent magnets & electromagnets?
Tennessee SPI Objective:Distinguish among the Earth’s magnetic field and the fields that surround a (permanent) magnet and an electromagnet.
Check for UnderstandingCreate a chart to distinguish among the earth’smagnetic field and the fields that surround a(permanent) magnet and an electromagnet.
SPI 0807:12.3 Magnetic Fields
Magnetic Fields
Notes SPI 0807:12.3Magnetic Fields Science
An invisible magnetic field exists around all magnets.
See Holt Online: Ch. 16: Sect 1 Visual Concept, Title: Magnetic Field
Magnetic Fields
Notes SPI 0807:12.3Magnetic Fields Science
magnetic field lines originate at the polesYou can see them by using fine iron filings.
Magnetic Poles are areas on a magnet that have opposite magnetic qualities.
North and South One area is called the north pole. The opposite area is called the south pole.
See Holt Online Ch. 16: Sect 1 Visual ConceptTitle: Magnetic Poles
Notes Science
South Pole
SPI 0807:12.3Magnetic Fields
North and South Poles All magnets have these poles regardless of the shape of the magnet
Notes ScienceSPI 0807:12.3Magnetic Fields
Horseshoe Magnet
Bar magnet
Donut magnet
Magnetic Forces magnets exert a magnetic force on other magnets due to spinning electric charges in the magnets. “Opposites” attract (North & South pull towards each other) “Like” repels (North & North or South & South push away)
Notes ScienceSPI 0807:12.3Magnetic Fields
See Holt Online: Ch. 16: Sect 1 Visual ConceptTitle: "Earth's Magnetic Field"
Notes SPI 0807:12.3Magnetic Fields Science
Earth is a Giant Magnet Our planet has a powerful magnetic field
SPI 0807:12.3Magnetic Fields
Geographic North
Geographic South
Now for the confusing part: Earth's north magnetic pole is at the southern end (Antarctica) Earth's south magnetic pole is at the northern end (Artic Circle)
Magnetic North
Geographic South
Notes Science
Magnetic SouthGeographic North
Notes SPI 0807:12.3Magnetic Fields ScienceEarth's magnetic field is called the magnetosphere.
It protects us from harmful solar radiation
Notes SPI 0807:12.3Magnetic Fields Science
View this video: Title: "Dance of the Spirits-Northern LightsLink: Northern Lights Video Clip
We can see the solar wind hitting Earth's magnetosphere.In the northern hemisphere this is called the Aurora Borealis.In the southern hemisphere this is called the Aurora Australis