Thus, inclination angle varies with latitude. At the magnetic pole, the field lines are directed almost straight down into the Earth and the inclination is said to be 90°. As one travels north from the equator, however, the field lines become progressively steeper. On the diagram above, note that near the equator, the field lines are approximately parallel to the Earth's surface the inclination angle in this region is said to be 0°. For example, at each location on the Earth, the field lines intersect the Earth's surface at a specific angle of inclination. Several features of the Earth's field vary in a predictable way across the surface of the globe and might, in principle, be used in assessing geographic position. The field lines emerge from the southern half of the earth and re-enter in the northern half. Forįurther information, consult your state's handbook of Science Safety.To a first approximation, the Earth's magnetic field resembles that of an enormous bar magnet. Materials used in a project is the sole responsibility of each individual. Reading and following the safety precautions of all Should be undertaken only in appropriate settings and with appropriate parental Implementation of any Science Project Idea Warning is hereby given that not all Project Ideas are appropriate for all In addition, yourĪccess to 's website and Science Fair Project Ideas is covered byĮ's Privacy Policy and site Terms of Use, which include limitations Renounce any claims against that arise thereof. By accessing the Science Fair Project Ideas, you waive and Regarding the Science Fair Project Ideas and is not responsible or liable forĪny loss or damage, directly or indirectly, caused by your use of such does not make any guarantee or representation Just make sure no one mistakes it for desert!Į provides the Science Fair Project Ideas for informational In a couple hours, you should have a three-dimensional model of a magnet’s field. Tape a magnet to outside bottom of the jar and refrigerate. Add a couple tablespoons of iron filings to the mixture, and then cool the gelatin until it begins to thicken slightly.

Ask a grown-up to make a small batch of clear, unsweetened gelatin and pour it into a small glass jar. Would you like to see what a magnetic field looks like in three dimensions? You can by trapping the iron filings in clear gelatin. This experiment does not work with copper wool! Going Further Cobalt and nickel are the only metals besides iron that are affected by magnets. Because the filings are so tiny and there are so many of them, we soon see a line. When the tiny rod shaped iron filings come in contact with the magnetic field, the north pole and the south pole of each individual filing lines up with those of the nearest bar magnet.

When opposite poles are placed near each other, the lines of force at the end of one magnet curve towards the other magnet’s nearest pole. When the two magnets are arranged with the like poles near each other, each magnet demonstrates the same curved lines from pole to pole, but the each magnet’s lines bend away from the end of the opposing magnet. With the single magnet, the iron filings form curved lines beginning at one pole and ending at the other.

Magnetic fieldlines