In an effort to make your new home as green and energy efficient as possible, you are examining ways to save energy. Look up at your roof. The roof is exposed to the hot sun in summer and is also where most heat escapes in the winter. Take this quiz to test your knowledge about energy-efficient roofing choices.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!