What causes a spring to form?
• Have you ever been to a spring? Could you see water flowing from under the ground? 4. Discuss the cross section at the bottom of part 2. 5. Have students read “Imagine that!” in part 2 and discuss. Bring out your gallon container. Have students look at the gallon container and try to imagine 530,000,000 of these containers. That is the number of containers it would take to hold the water discharged at Silver Springs in 1 day. Have students discuss how large this number is. You might have students calculate the number of gallons discharged in 1 day or 1 week. 6. Have students read part 3. Ask discussion questions: • How do we remove water from under the ground for our use? • What causes artesian pressure? • How do free-flowing artesian wells waste water? 7. Have students examine the illustration at the bottom of part 3 and discuss. Make sure students understand that water can flow freely without being pumped due to “artesian pressure.” 8. Have students read part 4 and part 5. 9. Ask d
