Fossil - the remains of an organism preserved in rock, Paleontologist - a scientist who studies fossils, Petrified Remains - when the hard parts of an organism are replaced by minerals, Mold - an imprint when a fossil dissolves, Cast - a fossil when a mold fills up, Carbon Film - coating of carbon that can preserve delicate parts such as insect wings, Trace Fossil  - a fossil that is indirect evidence of living things, Law of Superposition - In sedimentary rock layers, young rocks are on top and older rocks are on the bottom, Relative Age - Measuring the age of a rock by what happened 1st, 2nd, 3rd, Absolute Age - The actual date a rock formed, Index Fossil - A fossil used to find the age of a layer of rock, Radioactive decay - When an element breaks down (decays) into another element, Half-Life - the time it takes for half a radioactive element to decay, Era - Huge section of geologic time, we are in the Cenozoic, Period - a division of time in an era such as Jurassic and Triassic,

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?