Across
- 5. means all the animal life (insects, birds, mammals, fish, etc.) present in a specific region, habitat, or geological time period
- 6. a body of igneous rock (like granite or gabbro) that forms when magma (molten rock) pushes into existing rock layers deep underground, cools slowly, and solidifies, creating large mineral crystals
- 7. any preserved remnant, impression, or trace of a once-living organism from a past geological age, often found in rock, like bones, shells, footprints, or even leaf imprints
- 12. a geology principle stating that sedimentary layers (strata) are naturally deposited flat and horizontal due to gravity
- 13. a species of living thing (plant, animal, etc.) has died out completely, with no individuals left anywhere on Earth, so it can't reproduce or recover,for example dinosaurs
Down
- 1. The principle that natural laws/processes (erosion, sedimentation, volcanism) operating now have always operated in Earth's history
- 2. in geology, the oldest rock layers are at the bottom (youngest on top)
- 3. when sedimentary rock layers originally spread out in all directions, forming continuous sheets that extend until they hit a barrier or thin out
- 4. is a break or gap in the rock record, a surface where layers of rock are missing due to erosion or a long pause in sediment deposition
- 8. a fossil from a specific, short geologic time period, found widely across the Earth, that helps scientists date and correlate rock layers, acting as a time marker or "guide fossil" to determine the relative age of strata
- 9. a man-made item made at a point in time
- 10. the science that deals with the earth's physical structure and substance, its history, and the processes that act on it
- 11. the plants of a particular region, habitat, or geological period