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Science
Final Exam
| Term | Definition |
|---|---|
| Ecosystems | Are all living things, matter, and energy |
| Photosynthesis | Is how all energy enters an ecosystem |
| The Sun is the source of energy for an ecosystem | What is the source of energy in an ecosystem |
| The plants get food from the sun by photosynthesis then a herbivore eats the plants | How does this energy enter the ecosystem |
| Producers | are plants that make their own food |
| Consumers | are animals or things that get their energy from eating plants or animals |
| Autotroph | Are Producers |
| Heterotroph | are consumers |
| Detrivore | eats dead plant and animal matter |
| -10% of the available energy is passed onto the next tropic level. -The other 90% goes to: Growth, Maintenance, movement and heat | Energy in an ecosystem |
| Productivity | the amount of biomass produced per unit area in one year |
| Biomagnification | The amount of DDT moving from producers to primary consumers to secondary consumers, and so on. |
| Biotic | living things |
| Abiotic | non-living things |
| Primary Succession | Takes place in an area with no previous living organism |
| Secondary Succession | Takes place in an ecosystem after a disturbance to the previous climax community |
| Succession | The gradual change in populations of organisms in an ecosystems leading to a climax community |
| Catalyst | increases rate of reaction without actually taking part in the reaction |
| inhibitor | slows down reaction rate |
| Indicators | help identify acids and bases |
| Wind | -caused by uneven heating of the earth -warm air rises. Cool air comes into takes its place |
| Coriolis Effect | -Wind is curved because the earth is rotating -Curves to right in the northern hemisphere (opposite in the southern hemisphere) |
| Cold Front | is when a moving cold air mass overtakes a warmer air masses |
| Stationary Front | when cold air mass and a warm air mass are in contact but neither is moving |
| occuded front | cold front catches up with a slower moving warm front. The cold pushes all warm air up, away from the ground. |
| Pyramid of Biomass | Shows that Biomass decreases from each trophic level to the one above |
| Pyramid of Energy | Measures the total chemical energy the flows through each tropic level |
| Level of Consumers | Primary, secondary and tertiary |
| Population | All organisms of the same species, living in the same ecosystem, at the same time |
| Community | All living organisms,in the same ecosystem at the same time |
| 4 main factors that effect population size | Death, birth, moving in, and moving out |
| Intraspecific competition | competition among members of the same species |
| Interspecific competition | competition between two different species |
| density-dependant factors | factors that increases in significance as a population grows |
| density-independant | a natural disaster that will affect everything |
Created by:
tweetle-d
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