Magnetic Storm Name:_________________ 1. About how deep is Earth's core from the surface? 2. Which of the Earth's neighbors have weak magnetic fields? 3. What does Earth's magnetic field protect us from? 4. How do we know that Mars used to have a magnetic field? 5. What do many believe happened to Mars' atmosphere and water? Why? 6. How does pottery provide an insight into Earth's magnetic past? 7. What is believed to have caused Mars' core to stop the dynamo effect? 8. What happens to the lava in Hawaii when it cools and solidities upon contact with the sea water