Exam-style question
Try this first
Which of the following is a direct consequence of the relativity of simultaneity?.
- A.All observers agree on the order of causally connected events.
- B.Light signals can be used to synchronize clocks in all frames.
- C.Two events that are simultaneous in one frame may be ordered differently in another.
- D.The speed of light is faster in moving frames.
Model answer
What a good answer should say
- Two events that are simultaneous in one frame may be ordered differently in another.
Explanation
Why this works
Cause: The Lorentz transformation mixes space and time. Mechanism: Different observers assign different time coordinates to the same pair of events.
Effect: The temporal order of the events changes between frames. Consequence: Simultaneity is not absolute.
Common mistake
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