1. What is the passage mainly about? (1 mark)
a. Einstein’s theory of motion
b. The idea that time is relative
c. Traveling at a speed of light
d. The atomic clock experiment
2. What will happen to time if we travel close to the speed of light? (1 mark)
Time would appear to slow down/Time would slow down.
3. How fast is “the speed of light”? (1 mark)
186,000 miles per second
4. Why did the writer mention an astronaut traveling in space in P5? (1 mark)
To show a possible effect of time dilation/ to give an example of what will happen to humans if we travel close to the speed of light
5. Based on the passage, whom do you think will age more quickly, a person traveling in a rocket or a person riding a jet? Also, provide a reason to support your opinion. (2 marks)
A person traveling on the jet (1 mark)
Because it is far less closer to the speed of light (1 mark)
6. How many ways is Einstein’s idea about time tested? And which way is the most important? State your reason. (2 marks)
2 ways (0.5 mark)
Using the atomic clock is the most important point (0.5 mark)
Since scientists used it in a scientific experiment to test E’s idea (1 mark)
7. What can atomic clocks do? (1 mark)
It can measure tiny amounts of time.