Problems dating metamorphic rocks

Free 5-day trial You might hear a lot about reserves and resources on Earth, but what exactly is the difference between the two?In this video lesson, you will learn about each, as well as how they represent different things that are quite related to each other.As a member, you'll also get unlimited access to over 70,000 lessons in math, English, science, history, and more.Plus, get practice tests, quizzes, and personalized coaching to help you succeed.Basically, what this means is that we have measured it well enough that we feel confident saying a certain amount of that resource exists. If you take a survey of your neighbors to see how many of them have pies, that's a known quantity.

This is the portion of the resource that is called the identified resource, which is the portion of a resource that has been either measured or estimated.The slice of pie on your plate - the portion of the resource that is accessible - is the reserve of that resource.Many types of resources exist on Earth, like coal, oil, natural gas, sunlight, and wind. Can you say for certain how many pies there are on Earth right now?Each resource - the overall quantity of something - has reserves - the part we can access with mining, drilling or other methods. Probably not, but you can make estimates and inferences based on information you have.Similarly, the total amount of a resource can be described based on information we get from science and technology.

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