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g7 Segment 3
7th Grade STEMscopes CA Segment 3
| Question | Answer |
|---|---|
| Abiotic Factor | A nonliving thing that affects the ecosystem |
| Biotic Factor | A living thing that affects the ecosystem |
| Competition | When more than one individual or population in an ecosystem relies on the same limited resources |
| Ecosystem | A system comprising all the biotic and abiotic factors in an area and all the interactions among them |
| Interdependent | Having multiple systems that work together to accomplish various tasks |
| Mutualism | A relationship between organisms or species that is helpful to both |
| Organism | A self-contained living thing |
| Population | A group of interacting individuals of the same species located in the same area |
| Predation | The interaction between two animals in which one animal eats the other |
| Aquatic | Relating to water; living in or near water or taking place in water |
| Atom | The smallest particle of an element; made of electrons, protons, and neutrons |
| Consumer | An organism that must consume other organisms for nutrients |
| Decomposers | Organisms such as bacteria and fungi that break down the remains of dead plants and animals without need for internal digestion |
| Ecosystem | A system comprising all the biotic and abiotic factors in an area and all the interactions among them |
| Energy | The ability of a system to do work; required for changes to happen within a system |
| Energy Transfer | Movement of energy from one system to another |
| Food Web | Overlapping food chains with different pathways to show the flow of energy in an ecosystem |
| Matter Cycle | The movement of elements or molecules through a repeated sequence of events |
| Nutrients | Substances that provide nourishment essential for growth and the maintenance of life |
| Organism | A self-contained living thing |
| Producer | An organism that transforms energy from the Sun and uses carbon dioxide and water to make food |
| Terrestrial | On or of Earth |
| Trophic Level | The position an organism occupies on the food web |
| Continental Drift | The theory that continents were once connected but have drifted apart |
| Crust | The thin, solid, outermost layer of Earth; is either continental (landmasses) or oceanic (ocean floors) |
| Fossils | The mineralized remains of organisms, showing how long-dead organisms lived and how their bodies were structured |
| Index Fossils | Fossils that are widespread, come from organisms that lived over a relatively short period of time, and can be used to correlate rock strata |
| Mantle | The solid layer of Earth between the crust and the core; made of dense silicates |
| Plate Tectonics | The theory that the crust is divided into large pieces called tectonic plates that slowly move on top of the mantle |
| Tectonic Plate | Huge piece of crust that slowly moves on the upper, ductile part of the mantle |
| Convergent Boundary | A place where two tectonic plates move toward each other and collide |
| Crust | The thin, solid, outermost layer of Earth; is either continental (landmasses) or oceanic (ocean floors) |
| Divergent Boundary | A place where two tectonic plates move away from each other |
| Magma | Melted, or molten, rock material beneath Earth’s surface; cools slowly to form rocks with larger crystals |
| Mid-Ocean Ridge | An underwater mountain system formed by plate tectonics; the largest single volcanic feature on Earth |
| Ocean Basin | A depression of Earth’s surface in which an ocean lies |
| Seafloor Spreading | A phenomenon by which magma from Earth’s mantle comes up at the mid-ocean ridge and creates new oceanic crust |
| Subduction | The process in which a denser plate is pushed downward beneath a less dense plate when plates converge |
| Tectonic Plate | Huge piece of crust that slowly moves on the upper, ductile part of the mantle |
| Trench | Deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere |
| Competition | When more than one individual or population in an ecosystem relies on the same limited resources |
| Dynamic | Characterized by constant change, activity, or progress |
| Ecosystem | A system comprising all the biotic and abiotic factors in an area and all the interactions among them |
| Ecosystem Dynamics | Interrelated changes among the biotic and abiotic factors in an ecosystem over time |
| Population | A group of interacting individuals of the same species located in the same area |
| Resilience | The ability of an organism, population, community, or ecosystem to persist in the face of stressful or changing conditions |
Created by:
ncraft13
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