1. What is your hypothesis for this experiment? Write it as an "If , then..." statement 2. What are the three variables? a. Independent b. Dependent - C. Controls - 3. What purpose would the sand serve? In other words, what does it represent in the lab? 4. What purpose would the water serve? In other words, what does it represent in the lab? 5. What purpose would the heat lamps serve? In other words, what does it represent in the lab? 6. What purpose would the thermometers use? In other words, what does it represent in the lab? 7. How can you use these materials to test whether land or water heats faster? 8. How would you compare whether land or water heats faster? How do you know? 9. Within a 24-hour period, at what three points (times) should the temperature be taken in the sand and water? Why? 10. What would be an effective conclusion for your lab?