Activity Spend time observing or thinking about events that involve matter and energy. Which events can you
explain? Which events can't you explain? Now answer the following questions. Part A: describe three events that you cannot explain.
Part B: ask a testable question about each event you listed in part A. Part C: write a hypothesis for each testable question you listed in part B. Remember, a hypothesis can be proven right or wrong, so make your best guess. Part D: pretend you have a well equipped-lab with every testing device imaginable. What would you measure to test the hypotheses you listed in part C?