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Fossil : preserved evidence of an organism
Paleontologist : scientist who studies fossils
Relative dating : method to determine age of rocks
Law of superstition : younger layer of rocks are deposited onto older rock layers
Radiometric dating : decay of radioactive isotopes to measure age of a rock
Half life : amount of time it takes for half or the isotope to decay
Geological Time Scale : model that expresses major geological and biological events on earth’s history
Era : next largest division of the geological time scale
Periods : divisions of eras
Derived Traits : newly evolved features that do not appear in the fossils of common ancestors
Ancestral Traits : traits that do appear in ancestral forms
Homologous Structures : anatomically similar structures inherited from a common ancestor
Vestigial Structures : structures that are reduced forms of functional structures in other organisms
Analogous structures : same structure but different ancestor
Embryo : pre birth stage of an organisms development
Biogeography : distribution of plants and animals around the world
Fitness : measure of the relative contribution an individual trait makes to the next generation
Camouflage : morphology adaptations that allow them to blend in with their environment
Disruptive Selection : process that splits a population into 2 groups
Sexual Selection : when males appear differently than the females
SB5-D
Across:4. | structures that are reduced forms of functional structures in other organisms | 6. | method to determine age of rocks | 7. | divisions of eras | 10. | next largest division of the geological time scale | 11. | amount of time it takes for half or the isotope to decay | 12. | scientist who studies fossils | 13. | distribution of plants and animals around the world | 14. | morphology adaptations that allow them to blend in with their environment | 15. | newly evolved features that do not appear in the fossils of common ancestors | 17. | traits that do appear in ancestral forms | 18. | decay of radioactive isotopes to measure age of a rock |
| | Down:1. | measure of the relative contribution an individual trait makes to the next generation | 2. | model that expresses major geological and biological events on earth’s history | 3. | process that splits a population into 2 groups | 5. | anatomically similar structures inherited from a common ancestor | 8. | when males appear differently than the females | 9. | preserved evidence of an organism | 16. | pre birth stage of an organisms development |
| |
© 2015
PuzzleFast.com, Noncommercial Use Only
SB5-D
Across:4. | structures that are reduced forms of functional structures in other organisms | 6. | method to determine age of rocks | 7. | divisions of eras | 10. | next largest division of the geological time scale | 11. | amount of time it takes for half or the isotope to decay | 12. | scientist who studies fossils | 13. | distribution of plants and animals around the world | 14. | morphology adaptations that allow them to blend in with their environment | 15. | newly evolved features that do not appear in the fossils of common ancestors | 17. | traits that do appear in ancestral forms | 18. | decay of radioactive isotopes to measure age of a rock |
| | Down:1. | measure of the relative contribution an individual trait makes to the next generation | 2. | model that expresses major geological and biological events on earth’s history | 3. | process that splits a population into 2 groups | 5. | anatomically similar structures inherited from a common ancestor | 8. | when males appear differently than the females | 9. | preserved evidence of an organism | 16. | pre birth stage of an organisms development |
| |
© 2015
PuzzleFast.com, Noncommercial Use Only