Modified True or False. Write true on the blank before the number if the underlined word makes the statement correct. If not replace the underlined word with a more appropriate term to make it correct.


1. Sounds is produced when a vibration causes pressure variations in the medium


2. . During the day, the sound waves are refracted downwards and many not reach an observer


3. Heat is a measure of the average kinetic energy of each particle within an object.


4. Heat transfers from an object of higher temperature to a lower temperature


5. The faster the molecules vibrate, the more heat they give off.




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