Abeka 8th Grade Science Final Exam Graded A+

Mass - ANSWER-The amount of matter in an object Weathering - ANSWER-Process which breaks down rocks into soil Law - ANSWER-Theory that has never been proven false Geology - ANSWER-Study of the earth Epicenter - ANSWER-Point on the surface directly above the focus Faultblock - ANSWER-Rocks on one side are forced up, whilst on the other side, they are forced down. AA Lava - ANSWER-Blocky Lava Plate Tectonics - ANSWER-Earth's crust and mantle consists of huge plates slowly drifting due to convection currents Cindercone - ANSWER-Volcano composed of Ash and Rock fragments Hardness - ANSWER-Resistance to scratching on a flat surface Minerals - ANSWER-Substances found naturally within the earth Silicates - ANSWER-Largest group of minerals Steel - ANSWER-Alloy of iron and carbon Ruby - ANSWER-Red variety of corundum Drumlin - ANSWER-Glaciers overrun old moraines, smoothing it to small hills Delta - ANSWER-Fan shaped deposit at the mouth of a river Exfoliation - ANSWER-Breaking or peeling away of rocks in layers Karst - ANSWER-Regions where limestone is exposed and abundant Geologic Column - ANSWER-Evolutionist's time scale of the earth's history Theistic Evolution - ANSWER-Attempts to reconcile the Bible and Evolution Coelacanth - ANSWER-First thought to be the ancestor of Amphibians Cambrian Explosion - ANSWER-Explosion of life in the fossil record Uniformitarianism - ANSWER-The theory that all natural processes have operated in the same manner and same rate throughout the earth's history Oceanography - ANSWER-The study of the earth's oceans Tides - ANSWER-Movements of water in the ocean caused by the moon Continental Shelf - ANSWER-Gently sloping, underwater plains on the coasts Niskin Bottles - ANSWER-Used to collect water samples from the ocean Greenhouse Effect - ANSWER-Traps heat in the earth's atmosphere and does not affect insolation Troposphere - ANSWER-Weather layer of the atmosphere Coriolis Effect - ANSWER-The earth's rotation causes a change in wind courses Monsoon - ANSWER-Winds that change their direction from season to season Convection - ANSWER-Heat transfer by moving currents of hot air Cumulonimbus - ANSWER-Thunderstorm clouds Warm Front - ANSWER-Warm air moves into a region occupied by cold air Saturated - ANSWER-Air which is unable to hold more water Cirrus - ANSWER-Most common type of high-level cloud Occluded Front - ANSWER-Y-Shaped front Lightning - ANSWER-Abrupt discharge of electricity in the air Hurricane - ANSWER-Intense, low pressure system in the tropics Thunderstorm - ANSWER-Localized storms involving lightning, thunder, strong winds, heavy rain, and sometimes hail or tornadoes