4 th Grade Science Vocabulary ~ Student List

Transcription

1 Magnetism Attract Force Magnetism Repel Compass Pole Magnetic field Battery Circuit Closed Circuit Open circuit Electricity Conductor Insulator Static Electricity Series Circuit Parallel circuit Electromagnet Filament Positive charge Negative charge To pull towards one another A push or a pull Attraction of certain metals To push away from one another An instrument that indicates direction Opposite ends of a magnetic field Region around a magnetic material in which the force of magnetism acts A source of electricity with more than one cell A pathway for the flow of electricity A complete path through which electricity flows An incomplete path through which electricity will not flow, broken path A form of energy A material that allows electricity to flow/move A material that stops the flow of electricity A stationary electric charge made by friction A circuit with only one pathway for current to flow A circuit that splits into two or more pathways A piece of iron that becomes a temporary magnet when electricity flows through an insulated wire wrapped around it A slender wire in a lightbulb that conducts electricity Having too few electrons Having extra electrons

2 Rocks and Minerals Geology Property Depth Rock Mineral Evaporate Luster Opaque Translucent Transparent Igneous Metamorphic Sedimentary Fossils Course Hardness The study of Earth s materials A characteristic such as color, size, shape, texture The thickness of an object from top to bottom Earth material made up of different earth materials An ingredient of rocks that cannot be broken down any further Water changes from a liquid to a gas A physical property which describes how a mineral reflects light Not able to let light pass through Able to let some light pass through Clear; able to let light pass through Volcanic rocks formed from cooled lava Sedimentary or igneous rocks that have been changed by pressure/heat Rocks made from compacted layers of sediment The preserved remains of organisms that lived long ago Lacking a delicate texture; rough or harsh Resistance of a mineral to scratching, as measured by the Mohs scale

3 Landforms Landform Layers of Earth Erosion Weathering Canyon Delta Deposition Dune Floodplain Meander Mountain Plateau Sediment Valley Glacier Landslide Slope Flood Magma Volcano Shapes of the Earth s surface; such as valley, mountains, plains, and canyons Inner core, outer core, mantle, crust Wearing away of Earth Earth materials are either broken down (physical weathering) or changed into other kinds of minerals (chemical weathering) Valley created by a river A fan shaped deposit at the end of a river The process by which eroded earth materials settle in another place A mound, hill, or ridge of wind-blown sand The land that gets covered by water from a stream or river during a flood A curve or loop in a river High, uplifted area with steep sides Raised landform with flat top Eroded earth materials A low area between hills and mountains; often where a river flows A huge mass of slow moving ice Quick downward movement of earth materials The angle or slant of a stream channel or land surface An overflow of water onto normally dry land Molten rock under the Earth s surface A hill or mountain made up of hardened lava flows

4 Earthquakes Fault A sudden an violent shaking of the ground A crack in the Earth s crust Animal Adaptations Environment Habitat Vertebrates Invertebrates Hibernate Amphibian Mammal Adaptation Exoskeleton Arthropod Nocturnal Behavior Instinct Burrow Prey Predator Scavenger Decomposer Everything around a living organisms Where an organism naturally lives Animals that have a spinal column or backbone Animals that don t have a spinal column or backbone Becoming inactive or dormant in winter Cold-blooded animals that begin life in water with gills and tails, and later legs and lungs to live on land A warm blood vertebrate A physical or behavioral change Armor like, hard outer covering with flexible joints A large group of animals that have segmented bodies and hard outer covering Animal active at night The way an animal responds to its environment Something that influences an animal s behavior that is not taught To dig into the ground Animal being hunted An animal that eats other animals An animal that eats decaying organisms Living thing that breaks down dead plants and animals

5 Habitat Ecosystem Niche Food Web Food Chain A place where an animal or plant naturally lives All living and non-living things found together in an environment Specific role based on traits that allow for competing organisms to live in an ecosystem A model that shows how several food chains connected together A simple path that shows how energy moves from one organism to the next.