Solution Found!
Answers to odd-numbered Conceptual Questions
Chapter 16, Problem 9CQ(choose chapter or problem)
Problem 9CQ
Answers to odd-numbered Conceptual Questions can be found in the back of the book.
Why do you hear creaking and groaning sounds in a house, particularly at night as the air temperature drops?
Questions & Answers
QUESTION:
Problem 9CQ
Answers to odd-numbered Conceptual Questions can be found in the back of the book.
Why do you hear creaking and groaning sounds in a house, particularly at night as the air temperature drops?
ANSWER:
Step 1 of 2
Our houses are made of wood, glass, metal... In different conditions all of them expand or contract. When a house is colder (usually at night), these materials may move(contract) slightly and make noise. In general an increase in temperature will produce an increase in volume (apart from a few materials). A decrease in temperature will produce a decrease in volume. That's why we hear sounds; materials are adjusting to current conditions.