Fossils

Uncover the past! Learn about fossils, extinction, and rock layers.

Why Fossils? From the video, what are two things fossils and rock layers teach us (there are many possible answers)? Watch this video to answer the next couple questions. What is extinction? The preserved remains of an organism. Something that helps us know the relative age of rock layers. When all of the organisms of a species die out. The oldest layer is always on the bottom. What is a fossil? When all of the organisms in a species die off The preserved remains of an organism. Something that helps us know the relative age of rock layers. The oldest layer is always on the bottom. How Fossils are Made Watch this video to learn how fossils are made and answer the question below. In your own words, how is a fossil made? Index Fossils What are index fossils used for? They help us tell the age of the rock layer they are in. They help us tell the age of the other fossils in the same layer. They help us compare rock layers in different parts of the world. All of the above Use the picture above to answer this question.You are a geologist trying to figure out the age of the rock layers in Outcrop III. You already know the ages of the layers in Outcrop I so you use it as a reference. What layer in Outcrop I is the same age as layer (O)? A B C D E F G None What layer in Outcrop I is the same age as layer (Q)? A B C D E F G None