About 5 questions answered per page, looks like it would help middle school kids and above. You'd have to use the index to find the answer to your question. Sample page (under "weather") has the questions: How do I convert Fahrenheit to Celsius to Kelvin? What is a low high temperature and a high low temperature? What world weather records doe the US hold? Why is it more likely to rain in a city during the week than on the weekend? What does a 40 percent chance of rain really mean?