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How does different temperatures affect magnets

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abby bastien

on 28 April 2014

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Transcript of How does different temperatures affect magnets

How Does Temperature Affect the Strength of a Magnet?
Background Information
Organization determines strength
Temperature determines organization
Independent= Room temperature (70), Boiling temperature (150), freezing (29) and dry ice (-109.3)

Controlled= The size of the magnets, amount of iron shaving available to pick up, the pot used, and the area where testing is done

Dependent= The mass of iron shavings that the magnet picks up measured in milligrams.
1. Gather Materials
2. Put magnet into required temperature
3. Before removing, use infrared thermometer to check the temperature
4. Place the magnet on the scale before picking up the iron shavings
5. Use tongs and place magnet 1 inch above the shaving
6. Place magnet on scale and record the mass
7. Take the difference of the data before the iron shavings and after
Data Analysis
Trends- The warmer the magnet, the weaker it is
The colder the magnet, the stronger it is
R^2= 0.9834
R= 98%
Strong data
Everything went as expected
Vibration effected strength
Organization effected the strength
Boiling/room temp.= molecules scattered
Freezer/dry ice= molecules lined up
How molecules of a magnet react to temperature
The movement of the molecules in a magnet
Curie Point
Heated-Molecules change directions
Cooled-Molecules are lined up
More Vibration=weaker magnetic field
Dry ice
Iron Shavings
12 Magnets
Scale (milligrams)
Stove Top
Infrared Thermometer
Room Temperature Area
Regular Thermometer
Heated=Messier organization of molecules
Cooled= molecules all face same way
Higher kinetic energy when heated
"Heat." - Science for Kids! N.p., n.d. Web. 25 Apr. 2014.
"Cold and Magnets." Cold and Magnets. N.p., n.d. Web. 10 Mar. 2014.
"Magnets and Temperature: Does the Temperature of a Magnet Affect Its Strength?" Education.com.
"Temperature and Kinetic Energy." Temperature and Kinetic Energy. N.p., n.d. Web. 10 Mar. 2014.
Arana, Whitney. "How Does Heat Affect Magnets?" EHow. Demand Media, 22 Apr. 2009. Web. 25 Apr. 2014.
"What Is an Energy Body?" What Is an Energy Body? N.p., n.d. Web. 27 Apr. 2014.

The point when a magnet gets too hot and loses magnetism
Molecules bounce frantically
Almost no magnetic field
1043 K (1417.73 degrees Fahrenheit
Full transcript