Discussion-activity: Sun's shock waves

CNNFyi.com article: Sun storms creating a stir on Earth

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1. State in your own words what happens during a geomagnetic storm. How long has this solar storm ejected bursts of charged particles toward Earth? What effects could these particles have on Earth? Under what circumstances do geomagnetic storms occur? Who issues solar flare warnings?

2. According to space forecasters, Aurora watchers could see particularly strong Northern Lights, while power grids and satellites could experience electrical problems. With this statement in mind, what do you infer about the possible effects of this geomagnetic storm? Why do you suppose the eruptions occur near the height of the sun's 11-year storm cycle? On Earth, how would you classify this type of geomagnetic storm? Do you think these solar flares will affect any satellites or other activities in space?

Extension

Use a magnet and compass to represent a solar storm and the Earth's normal magnetic field, respectively. We depend on magnetic north to find our way. This magnetic field protects us from most of a geomagnetic storm's harmful effects, according to experts. But some adverse consequences may occur if this protection is penetrated. Cover a table with a large sheet of paper. Have students use masking tape to secure an orienteering compass to the table. Slide the magnet toward the compass slowly. At the point where the directional needle on the compass starts to move toward the magnet, mark a spot. Continue this process in a semicircular pattern. Repeat the process using weaker magnets. The stronger the magnet, the greater the distance it can affect the compass. In other words, the stronger the solar storm, the greater the effect on the Earth's magnetic field. Discuss how solar storm activity could affect commercial airlines and other important industries that depend on finding magnetic north.