Magnetic Field Reversal

Watch the video on this website all the way through, then use the pause/play button to listen to it and answer the following questions:

Create a ten slide presentation with the questions with images that illustrate each question.

1. The Earth's magnetic field acts as_______________, protecting our planet from _______________________________

2. In 1906, Bernard Brunhes examined newly formed ______________

3. Lava contains _____________________________________ the Earth.

4. Inside the ______________ lava, __________________________ are free to move.


5. As the lava cools and forms into _______, the iron particles align themselves with the ________________________, like a compass.

6. During his research, Brunhes found some of the rocks had ___________________________________ direction.

7. Brunhes realized that at some time in the past, the earth's magnetic field had _________________________.

8. The earth's magnetic field has reversed at least ___________________ in the last ___________________________years.

9. We may be going through ______________________ right now.

Turn the presentation into the Magnetic Field Reversal folder on the server