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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. |