| Word Wall Vocabulary 8th Grade |
|
analyze - summarizing data area - the measure of an object’s surface controlled variable - the part of the experiment that stays the same dependent variable - the part of the experiment that changes because of the independent variable gram - metric unit for mass hypothesis - an educated guess independent variable - the part of the experiment that is changed inference - explanation based on prior knowledge and observation law - accepted as fact - based on observation length - width, height, thickness, or distance liter - metric unit for liquid volume mass - amount of matter in an object meniscus - the curvature of the surface of the water meter - metric unit for length observation - using the five senses to examine an object predict - what you think you will observe in the future SI - the International System of Units technology - any tools that meet human needs theory - an accepted hypothesis - based on inference volume- the amount of space an object takes up |
|
compound - a chemical combination of two or more different elements and cannot be taken apart physically element - matter made up of only one kind of atom and cannot be broken down metal - elements that are good conductors, malleable and ductile metalloid - elements that have both metal and nonmetal properties mixture - two or more substances that are not chemically combined and can be separated by physical means nonmetal - elements that are poor conductors and brittle
physical change
- the change in the form of a substance but not in its chemical composition |
|
deposition - process of sediments being laid down erosion – process by which wind, water, or gravity transport soil and sediment from one location to another igneous rock – formed from cooled magma or lava lava – molten rock at the surface of earth magma – molten rock inside the earth metamorphic rock – changed rock formed from heat and pressure inside the earth mineral - naturally formed, inorganic solid with a crystalline structure rock – naturally occurring materials composed of a mineral mixture formed by sedimentary, igneous or metamorphic processes rock cycle – continual process of new rock forming from old rock sedimentary rock – soil, sand, and minerals are compacted and cemented together sand - individual rock or mineral fragments from 0.0625-2.0 mm in diameter form lightweight, free-draining soils that cannot hold onto nutrients silt - individual mineral particles that range in diameter from 0.004-0.0625 mm form soil that holds water and can be difficult to drain; can hold limited nutrients soil - loose mixture of small mineral fragments, organic material, water, and air that can support the growth of vegetation weathering – process by which rock materials are broken down by the action of physical or chemical processes
|
|
convergent boundary - place where two plates collide divergent boundary - place where two plates are moving away from each other plate boundary - place where two plates meet plate tectonics - theory that Earth’s crust and upper mantle are broken into pieces (lithosphere) called tectonic plates seismic waves - earthquake waves used to measure the density of the Earth’s layers
transform boundary -
place where two plates are moving horizontally past each
other |
|
eclipse - event in which the shadow of one celestial body falls on another light year - distance light travels in one year - approximately 9.46 trillion km orbit - when one celestial body revolves around another celestial body phase - change in sunlit area of one celestial body as seen from another celestial body revolution - one complete trip around the sun rotation - the spin of a planet on its axis
satellite -
a
natural or artificial body that revolves around a planet |