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Sci8 Energy
Energy in Ecosystems
| Question | Answer |
|---|---|
| a- | a prefix meaning "not" |
| chemo- | a prefix meaning "chemical" |
| bio | a word part meaning "life" |
| abiotic | not living, physical features of the environment, including air, water, sunlight, soil, temperature and climate |
| biotic | features of the environment that are alive or were once alive |
| chemosynthesis | The production of energy-rich nutrient molecules from chemicals. |
| water cycle | A model showing how water moves from the surface of the Earth to the atmosphere and back to Earth again through precipitation, evaporation, and condensation. |
| condensation | changing from a gas to a liquid |
| evaporation | liquid water changing into water vapor |
| atmosphere | the air surrounding the Earth; made up of gases, including 78% nitrogen, 21% oxygen and 0.03% carbon dioxide |
| soil | mixture of mineral and rock particles, the remains of dead organisms, air and water that forms the topmost layer of the Earth's crust and supports plant growth |
| climate | an area's average weather conditions over time, including temperature, rainfall or other precipitation |
| nitrogen fixation | a process in which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use |
| food web | a model that shows interconnected food chains showing the complex feeding relationships among organisms in a community. Organisms may belong to multiple trophic levels |
| energy pyramid | a model that shows the amount of energy available at each feeding level in an ecosystem. Each trophic level has less energy available to it than the level below. |
| nitrogen cycle | a model that describes how nitrogen moves from the atmosphere to the soil, to living organisms and then back to the atmosphere |
| carbon cycle | a model describing how carbon molecules move between the living and nonliving worlds |
| producer | organisms that use the sun's energy to make their own food |
| consumer | organisms that gain energy by eating producers and/or other consumers |
| decomposer | organisms that consume dead plants and animals and release nutrients |
| herbivore | primary consumers - plant eater |
| carnivore | secondary consumers - eat primary consumers - meat eater |
| omnivore | organisms that use both plants and animals for food |
| sun | ultimate source of energy for all ecosystems |
| trophic level | feeding level on a food web |
| arrows of a food chain | represent direction of energy flow |
| basic needs of plants | sunlight, water, minerals, air, space |
Created by:
satsherry
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