What Our Lives Would Be Like without Magnets

What Our Lives Would Be Like without Magnets

Their influence in our lives and the world

Their influence in our lives and the world

What is a magnet?What is a magnet?

A material or object that produces a magnet field

is due to the motion of electric charge

Plate tectonics explain the large scale motions of the Earth's lithosphere, causing magnetic rocks to exist.

A material or object that produces a magnet field

is due to the motion of electric charge

Plate tectonics explain the large scale motions of the Earth's lithosphere, causing magnetic rocks to exist.

What do you know about magnets?

What do you know about magnets?

Use in everyday life Attract objects Most have two poles Have a space around

them called magnetic field

Use in everyday life Attract objects Most have two poles Have a space around

them called magnetic field

Where do they come from?Where do they come from?

Nature Man-made

Nature Man-made

Things that need magnetsThings that need magnets

Headphones Stereo speakers Computer Telephone receivers Phone ringers Doorbell ringers Seal around refrigerator

doors Credit card magnetic strip

Headphones Stereo speakers Computer Telephone receivers Phone ringers Doorbell ringers Seal around refrigerator

doors Credit card magnetic strip

Television coils Computer hard drive CD and DVD spinner Dishwashers Refrigerators Fans Cell phones Starter motor of cars And many more

Television coils Computer hard drive CD and DVD spinner Dishwashers Refrigerators Fans Cell phones Starter motor of cars And many more

Types of MagnetsTypes of Magnets

Magnetic metallic elements (more common): Iron ores, cobalt, and nickel

Composites (common): Powder iron and ceramic Aluminum and other

materials Resin and magnetic powder

Others

Magnetic metallic elements (more common): Iron ores, cobalt, and nickel

Composites (common): Powder iron and ceramic Aluminum and other

materials Resin and magnetic powder

Others

What do you want to know about magnets?

What do you want to know about magnets?

Think about magnets Develop an idea Write down questions Make list Discuss ideas with

partner Present to class

Think about magnets Develop an idea Write down questions Make list Discuss ideas with

partner Present to class

Where to learn about magnetsWhere to learn about magnets

In books On the web Manipulating magnets Thinking about things

that require magnets Searching for objects

that need magnets

In books On the web Manipulating magnets Thinking about things

that require magnets Searching for objects

that need magnets

Where do we go from here?Where do we go from here?

Make our own magnets Develop activities involving magnets Educate friends Discuss about the world in relation to magnets

Make our own magnets Develop activities involving magnets Educate friends Discuss about the world in relation to magnets

Bibliography;Bibliography;

NASA’s KSNN - why do magnets work: http://ksnn.larc.nasa.gov/k2/videos/s_magnetsWork_H.html

ISIS Data Analysis: http://www.isis.rl.ac.uk/DataAnalysis/e-science/2004_povs/2004_povs.html

Wikipedia: http://en.wikipedia.org/wiki/Magnet KidsKonnect:

http://www.kidskonnect.com/content/view/90/27/

NASA’s KSNN - why do magnets work: http://ksnn.larc.nasa.gov/k2/videos/s_magnetsWork_H.html

ISIS Data Analysis: http://www.isis.rl.ac.uk/DataAnalysis/e-science/2004_povs/2004_povs.html

Wikipedia: http://en.wikipedia.org/wiki/Magnet KidsKonnect:

http://www.kidskonnect.com/content/view/90/27/