Question 4
A model uses two upper bottles as kidneys, two long straws as ureters, a lower inverted bottle as the bladder and a short outlet straw as the urethra. Water is poured into the upper bottles. Two ideas on how the model could be made more accurate are listed below. Discuss how they would improve the model and write your answers in spaces provided.
| Idea | How it would improve the model |
|---|---|
| Idea 1: I could insert small sponges in the bottles that represent the kidneys. | ___ |
| Idea 2: I could insert a valve in the bottle that represents the bladder to release the water once some has collected. | ___ |
| Idea | How it would improve the model |
|---|---|
| Idea 1: I could insert small sponges in the bottles that represent the kidneys. | ___ |
| Idea 2: I could insert a valve in the bottle that represents the bladder to release the water once some has collected. | ___ |
