1. Earth’s Magnetic Field

3. 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 ________

8. Cosmic Rays Luckily, the Earth’s magnetic field deflects _________ particles, like cosmic rays, along its lines of force towards the _______

9. The Aurora Borealis

10. Caused by particles, ionised by cosmic rays, recombining with electrons and emitting light

11. Earth’s Magnetic Field

12. Earth’s Magnetic Field (p56) Has lines of _______ and _______ like any magnet Caused by _______ in the Earth’s _____ core