1. Which of the following would be a testable hypothesis?
A: If certain foods are healthy for you, then they should also taste good.
B: Dropping a ball from a height of 10 m will cause it to bounce back up 5 m.
C: If acid is added to a solution, then the pH of the solution will go down.
D: Plants produce glucose as the end product of photosynthesis.
2. Which two adjectives describe a hypothesis?
A: conditional and convincing
B: unobservable and untestable
C: tentative and testable
D: conclusive and concrete