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science final exam
Environmental science exam
| Question | Answer |
|---|---|
| What does the lake or ocean effect have on temperature or climate in general? | There is more precipitation and temperature generally stays more stable, water helps hold the temperature where it is |
| Know the difference between primary succession and secondary succession. Where can it occur? Why is is so much slower than the other? | primary - occurs when new ecosystem develops where there was none before (why it takes longer); located in any open land, Secondary occurs following disruption of an existing ecosystem (such as a fire), doesn't take a long because soil is already in place |
| Know the difference between eutrophic and oligotrophic | eutrophic - full of algae and nutrients (green), oligotrophic - clear, low in nutrients |
| What is the difference between streams and rivers? | stream - narrow channels of water often beginning in mountainous areas; river - larger body of water (a stream forms a river) |
| Characteristics of a developed and developing countries | developed: high income, high life span, lower population growth; developing: low income, lower life span, higher population growth |
| Discuss and understand the tragedy of commons | area that belongs to no individual; shared by the entire society (air, oceans) |
| Renewable resource | it can be replenished within a human lifetime (trees, grass) |
| nonrenewable resource | can be used up within a lifetime (coal or oil) |
| Discuss why it's important for scientific studies to be published and reproducible | It needs to be published so it can be shared with the world. It needs to reproducible so that it can be proven |
| Why is having a larger sample size better than a smaller one? | the larger the sample size the more reliable the results will be |
| What is the difference between a blind and a double-blind experiment? | in a blind it is conducted so the subjects don't know which is the control and which is the experimental group. The double-blind prevents both the scientist and the subjects from not knowing which is the control or which is the experimental group |
| Which experiment prevents bias? | double-blind because neither the subject nor the scientist know |
| What factors influence life expectancy? | fertility rate and gross domestic product (GDP) |
| What are some biogeochemical cycles (list some) | Water cycle, carbon cycle, nitrogen cycle |
| Label an atom with protons, neutrons, and electrons | |
| protons | located inside the nucleus |
| neutrons | located inside the nucleus |
| electrons | live outside the atoms, orbits the nucleus |
| What three wavelengths are found in sunlight? | ultraviolet -damages skin tissue, visible - range of wavelengths seen by eyes, and infrared - heat energy |
| What wavelengths are used specifically for photosynthesis | everything but green |
| Which two classification taxa are used to define a species' scientific name? | Genus species |
| Why is having a scientific name so important? | it is the universal term known world wide |
| predator-prey | one organism consumes the other ex: cat and mouse |
| Intraspecific competition | competition that occurs within members of the same species |
| Interspecific competition | competition that occurs between different species ex: for water, territory |
| Mutualism | Relationship that benefits both organisms |
| Commensalism | one organism benefits and the other is neither harmed nor helped |
| Parasitism | one organism benefits at the expense of the other |
| Describe the differences between natural and artificial selection | natural - something that happens in nature, artificial - taken two different breeds and merged them together |
Created by:
a.allsup
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