* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Geo Vocab Puzzle
Survey
Document related concepts
Schiehallion experiment wikipedia , lookup
Large igneous province wikipedia , lookup
History of geomagnetism wikipedia , lookup
Spherical Earth wikipedia , lookup
Paleontology wikipedia , lookup
History of paleontology wikipedia , lookup
Evolutionary history of life wikipedia , lookup
History of geodesy wikipedia , lookup
Phanerozoic wikipedia , lookup
History of Earth wikipedia , lookup
Transcript
Class # ___: Geologic Time Scale Puzzle Word Bank endoskeleton plate cyanobacteria amphibians reptiles extinction Pangaea gymnosperm angiosperms mammal marsupial Geologic time scale Radiometric testing stratigraphy era period epoch trilobite fossil exoskeleton Name _________________________ Core 1 2 3 4 Across 1.plant having its seeds enclosed in an ovary; a flowering plant 3.method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample. 7.subdivision of a period 10.is a system of chronological measurement that relates stratigraphy to time, and is used to describe the timing and relationships between events that have occurred throughout Earth’s history. 13.extinct marine arthropod that occurred abundantly during the Paleozoic era, with a carapace over the forepart, and a segmented hind part divided longitudinally into three lobes. 14. blue-green algae a group of photosynthetic bacteria which release oxygen into the atmosphere 15. a cold-blooded vertebrate of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin, and typically laying soft-shelled eggs on land. 16. a long and distinct period of history with a particular feature or characteristic; several hundred million years 18. external skeleton 19. a cold-blooded vertebrate animal that has an aquatic gill-breathing larval stage followed by a terrestrial lung-breathing adult stage. Egg layers in water. Down 2. The study of rock layers (strata), especially the distribution, deposition, and age of sedimentary rocks. 4. plant, such as a pine tree, whose seeds are not enclosed within an ovary, fruit. 5. ____________ tectonics = a theory explaining the structure of the earth's crust and many associated phenomena resulting from lithospheric plates that move over the underlying mantle. 6. the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. 7. internal skeleton 8. mammal whose members are born incompletely developed and are typically carried and suckled in a pouch on the mother's belly. 9. a continent which included all the landmass of the earth prior to the Triassic period 11. state or process of a species becoming extinct, no longer existing on the Earth. 12. warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and the birth of live young. 17. subdivision of an era