Mini-labs

__MINI-LAB ACTIVITIES-Pick one of the following topics (2 students/lab max) and start a "mini-lab" google doc; sign up for that topic. Write the problem down and then a hypothesis on what you think the results would be. Next, design an experiment that would test your hypothesis; make sure you have a materials list of everything you will need.__ 1. How much water would come out of all the bubblers in the school if they were left on for one hour? Which are the most and least wasteful? 2. How much gas is produced when dissolving one Alka-Seltzer tablet in water? (Measure in 10 sec. intervals.) 3. How fast does water come out of the bottom of a cup depending on the size of a single hole in the bottom? 4. How fast does a pendulum swing/minute when the length of the string is varied? 5. How fast does a ball roll down an inclined plane at different angles? 6. How fast does chalk dissolve in dilute HCl depending on the size of pieces it’s broken into? 7. How much does a laser beam spread out as distance from a wall is increased? 8. How fast does an Alka-Seltzer tablet dissolve depending on the temperature of the water? 9. How do decibel levels in gym class change during one class period? (Include the locker room.) 10. How much sugar will dissolve in 200 ml of water depending on the temperature of the water? 11. What are the most and least humid rooms in the school? (Include hallways in your data.) 12. How does the pH of a beaker of water change as dilute acid is added? 13. How fast does water evaporate depending on the distance from a heat source? 14. Which liquid is most/least dense of the following: maple syrup, motor oil, cooking oil, dishwashing liquid, methyl alcohol, vinegar, milk, honey and water? 15. How do various types of rocks differ in density? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">16. How does heart rate change as an activity is repeated over and over? (Make sure you get a resting heart rate.) <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">17. How does temperature change (in 30 second intervals) as ice is melted to water and then heated to boiling?