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6th Grade Vocab
| Term | Definition |
|---|---|
| energy transfer | When one kind of energy is converted into another. An example is a batteries chemical energy being converted into electricity. |
| heat transfer | The process whereby heat moves from one body or substance to another by radiation, conduction, convection, or a combination of these methods. |
| states of matter | Solid, liquid, gas and plasma. |
| conduction | The transfer of heat when two objects come into contact. |
| convection | The transfer of heat by the circulation or movement of the heated part of a liquid or gas. |
| radiation | The process in which energy is emitted as particles or waves. |
| kinetic energy | Energy of motion. |
| potential energy | Stored energy. |
| atoms | The smallest component of an element having the chemical properties of the element. |
| molecules | Two or more atoms that are chemically bonded. |
| closed system | A region that is isolated from its surroundings by a boundary that admits no transfer of matter or energy across it. |
| transformation | Change in form, appearance, nature, or character. |
| mass | The amount of matter in an object. |
| ecosystem | A biological community of interacting organisms and their physical environment. |
| biotic | Living things like plants or animals. |
| abiotic | Nonliving things like a bike or toaster. |
| population | A group of individuals of the same species living and interbreeding within a given area. |
| community | All the populations in a given area interacting at a given time. |
| producers | An organism that can make its own food like a plant. |
| consumers | An organism that cannot make its own food. It gets its food by eating producers or other consumers. |
| decomposers | An organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances for food. |
| bacteria | Single celled microbes to small to see without a microscope. |
| fungus | Any of a diverse group of eukaryotic or single-celled organisms that live by decomposing and absorbing the organic material in which they grow. |
| parasite | An organism that lives on or in an organism of another species, known as the host, and benefits by getting nutrients from the host. |
| predator | Any organism the exits by preying upon other organisms. |
| prey | An animal hunted or seized for food, especially by a carnivorous animal. |
| symbiosis | The relationship between two different organisms living together that benefits both. |
| competiton | When organisms compete for resources like food and territory. |
| pollution | The introduction of harmful substances or products into the environment. |
| resource depletion | The consumption of a resource faster than it can be replenished. |
| species extinction | When no members of a species are alive. |
| igneous | Rock formed from the cooling and solidification of lava or magma. |
| metamorphic | Rock that has undergone transformation by heat or pressure. |
| sedimentary | Rock that is formed by the deposition of material at Earth's surface. |
| rock cycle | A model that describes how rocks are created and destroyed. |
| erosion | The act in which earth is worn away by water, wind, or ice. |
| minerals | The building blocks of rocks. |
| weathering | When small pieces of rocks are broken apart by wind, water, or ice. |
| soils | The upper layer of earth in which plants grow. |
| sediments | Matter that settles to the bottom of a lake, pond, or river. |
| abrasion | Mechanical scraping of a rock surface by friction between the moving particles. |
| glaciers | A slow moving river of ice formed by the accumulation and compaction of snow. |
| gravel | A loose collection of small water-worn or pounded stones. |
| silt | Fine sand, clay, or other material carried by running water and deposited as a sediment. |
| clay | A stiff, sticky fine-grained earth that often forms an impermeable layer in the soil. |
| organic material | Matter composed or organic compounds that has come from the remains of organisms such as plants and animals and their waste products in the environment. |
| plate tectonics | The theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. |
| earthquake | The results of a sudden release of energy in the Earth’s crust that creates seismic waves. |
| volcanic eruption | A rupture on the earth's crust that allows hot lava, volcanic ash, and gases to escape from the magma chamber below the surface. |
| mountain building | Refers to the geological processes that underlie the formation of mountains. |
| lithosphere | The earth's crust and upper mantle. |
| crust | The outer layer of the earth. |
| mantle | The layer of earth's interior between the crust and the outer core. |
| inner core | The solid center of earth's interior thought to be responsible for earth's magnetism. |
| fossils | The preserved remains or traces of animals, plants, and other organisms from the remote past. |
| rocks | A naturally occurring solid aggregate of one or more minerals. |
| geological history | Follows the major events in earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planets rock layers. |
| timelines | A way of displaying a list of events in chronological order. |
| relative dating | A technique used to determine which of two fossils is older. |
| rock layers | A bed or layer of sedimentary rock that is visually distinguishable from adjacent beds or layers. |
| thermal expansion/contraction | Most materials expand when heated and shrink when cooled. |
| sand | A naturally occurring granular material composed of finely divided rock and minerals particles. |
| magnetic feild | A region around a magnetic material or a moving electric charge within which the force of magnetism acts. |
| poles | One of the two ends of a magnet. |
| asthenosphere | The upper layer of the earth's mantle, below the lithosphere, in which convection is thought to occur. |
| outer core | A liquid layer composed of iron and nickel which lies above the Earth's solid inner core and below its mantle. |
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