| Question | Answer |
|---|---|
| Crust | the outermost layer of rock of which a planet consists, especially the part of the earth above the mantle. |
| Mantle | mantle definition. The region of the interior of the Earth between the core |
| Outer Core | The outer core of the Earth is a liquid layer |
| Density | the degree of compactness of a substance. |
| fossils | the remains of old bones and put into a shape or animal/structure |
| rocks | a earth made hard-object |
| geological history | The science devoted to the study of the Earth, particularly the solid Earth and the rocks that compose it. |
| timelines | a graphic representation of the passage of time as a line. |
| rock layers | Geology. a single bed of sedimentary rock, generally consisting of one kind of matter representing continuous deposition. |
| relative dating | Relative dating is the science of determining the relative order of past events |
