- Find the mass of your balloon (grams). Find the weight (Newtons).
- Estimate the volume of your balloon (cubic centimeters, liters).
- What is the height of the ceiling in the HOP?
- How much work is done on your balloon as it lifts from the floor to the ceiling? (Remember work is force x distance. The force of lifting the balloon up must equal the force pulling the balloon down–gravity–weight?)
- What are all the energy transformations–remember that any form of energy involves the capacity to do work?
- How could you determine the density of air at room temperature?
- What is your explanation for why the balloon flies?
- How could your idea be tested?
- Take material and equipment to the gym.
- 2 experiments from Dr. F. What do you think?
- Each group propose an experiment and try.
Everyone focuses. Everyone helps. No distracting or off-task behavior.
If you need something to do while waiting:
- Get your digital science notebook complete and up to date.
- Examine links and references from previous blogposts on energy and hot air balloons.
- Find out more about the history of ballooning and science: http://www.pbs.org/wgbh/nova/space/short-history-of-ballooning.html
- Prepare for in-class writing summative assessment for Tuesday. See previous blog for questions.