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