p2e earths magnetic field
Post on 09-Jun-2015
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- 1. Earths Magnetic Field
2. 3. Earths Magnetic Field
- Vital to life on Earth
- Due to the Iron core
- Protects us from cosmic rays
- Prone to reversal
4. Cosmic Rays
- High energy, fast moving particles from the Sun and outside the solar system
5. Cosmic Rays
- Hit upper atmosphere and create gamma rays
- One cosmic ray can create hundred of gamma rays
6. Cosmic Rays
- Gamma rays can __________ materials
- This can cause damage to tissues and ________
7. 8. Cosmic Rays
- Luckily, the Earths magnetic field deflects _________ particles, like cosmic rays, along its lines of force towards the _______
9. The Aurora Borealis 10. The Aurora Borealis
- Caused by particles, ionised by cosmic rays, recombining with electrons and emitting light
11. Earths Magnetic Field 12. Earths Magnetic Field ( p56 )
- Has lines of _______ and _______ like any magnet
- Caused by _______ in the Earths _____ core
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