Oceanography2 Crossword
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
 
 
Down: 2) rocky planets in orbit around the sun; Mercury, Venus, Earth, Mars theory - tested, working hypothesis3) arctic explorer/scientist who designed the 'deep sea clamm'4) method using a weighted line to determine water depth5) related volcanic activity to sea level change6) first to state the Earth is a sphere7) age determination of rocks using decaying isotopes11) chief scientist on the Challenger expedition12) light from receding galaxies shifted to longer wavelengths15) aggregate of minerals17) a diffuse layer of ozone mixed with other gases surrounding the world at a height of about 20 to 40 kilometers (12 to 25)18) expulsion of magmatic gasses by volcanism20) cycle of igneous, sedimentary, and metamorphic rocks and the processes that form them22) Antarctic explorer; found same species as his uncle did in the Arctic23) first to produce a map of the known world using latitude and longitude lines Across: 1) rock formed from compaction/cementation or chemical precipitation6) seismic wave component parallel to direction of wave travel8) fundamental matter particles comprising protons and neutrons9) confirmed existence of Coriolis Effect10) rock altered by heat or pressure13) longest expanse of time covering Earth's formation14) large category of mineral groups based on silica tetrahedron16) seismic boundary between the crust and mantle19) beginning point for the creation of the universe21) naturally occurring, inorganic, crystalline structure, chemical composition and a unique set of physical properties24) increased oxygen level 1.8 bya in environment due to photosynthesis25) German oceanographic ship equipped with the first echo sounders26) seismic wave component perpendicular to direction of wave travel27) determined latitude using the angle between the north star and horizon28) discovered workings of the hydrologic cycle
 

 

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