PDF chapter test TRY NOW
1. What is vibration?
a. The motion of an object is called vibration.
b. The weight dangling from the spring is an example of a .
2. Give an example to show that light travels faster than sound?
a. Lightning is the most common example used to demonstrate that light travels faster than.
b. When lightning strikes, you first see the lightning, then hear the thunder after a few moments. This is due to the .
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