| A | B |
|---|
| What is the big bang theory? | That a single star exploded and all the dust came together, forming a dust cloud |
| How old is the earth? | 4.6 Billion years |
| How did the oceans form? | Volcanos and clouds |
| What is Radiometric Dating? | Looking at radioactive elements in rocks |
| The Big Bang | cooling enabled the formation of molecules, gravity played a role in pulling moleules together forming structure |
| Nebula | intial spinning dust cloud. sun formed at center |
| Early Earth | Temperat |
| bleajaaa | fasdfafaasdas |
| Antartic Cirlce | 66 1/2 S. Lat. |
| Arctic Cirlce | 66 1/2 N. Lat |
| radiometric dating | based on decay of isotopes |
| Bathymetric | Charts of the ocean that show lines conneting points of similar depth below the sea level |
| Big Bang | How the earth started 17.3 billion years ago |
| Contours | Connecting lines of depth or elevation |
| Half Life | The time over which one half of the atoms of an isotope decay |
| Hydeologic Cycle | The movement of water through resivors, |
| Isotope | Elements with an unstable nucleus |
| nebula | a rotating |
| The Big Bang | Cooling enabled for the fomration of molecules, gravity played a role in pulling molecules together forming structure |
| Early Earth (Temperature) | Intial temperatior was high compared to gravititonal collaspe of particles releasting heat on impact |
| Early Earth (Planetary Piffecation) | Hevey elemets migrated to center, light to surface |
| Shape of the Eath | Not a pefect sphere, but buldged at the equated, flattend at poles, difference in surfacce elevation |
| Geologic Time Scale | Time Divisons. |
| Longest Time Scale | Eon |
| Eons are divided into | Eras |
| Eras are divided into | Periods |
| Inner Core | Rich in iron/nickel, behaves like a solid, extreamly hot. |
| Outer Core | Same compostion as the inner core, but beheaves like a liquid |
| Mantel | Largest region, accounts 70% of volume of earth |
| Crust | The layer we live on, composed of granite, relativly light, makes up all continets and large islands |
| Evaporation | The water turnes into an invisible water vapor |
| Sublimnation | Conversion of ice to gas, directly |
| Transpirataion | Loss of water from plant into the atmosphere |
| Topography | surface features hills, montains, canyons, of ground. |
| Contour Interval | vertical distance between adjacent contour lines |
| Isobath | Shows depth of the ocean floor |
| When lines are ____ descends slowly, when ____ rapidly | Far apart, close |
| Lithosphere | Outer, ridgid part of earth, includes the continental and oceanic crusts and the upper part |
| Moho | Chemical boundary between crust and mantle marked by a rapid increase in seismetic waves seepd |
| Athenosphere | upper deformable portion of Earth's mantle, partially moton |
| Which Ocean is the shallowest? | The Artic |
| What percent of the earth's surface does each ocean cover? | Pacific-> 35.6; Atlantic-> 18.5; Indian-> 14.5, Artic, 2.4 |
| Radar | Radar detecting and Raning. Measurement of travel time of burst of energy as it travels outward and is reflected back. must be somewhat close to land so signals can be reflected back |
| Loran | 'long range navigation', receves on boats detect energry transmison from fixed stations and compare travel times to detirmine boats location. can be used for from land as long as vessel can recive signals |
| GPS | Global Postining System, montair signlas from orbitting satalites, most accurate and wide-aviable,and any weather, 24/7 |
| How and when is our solar system thought to have been formed? | The collapse of a single roating could of gas and dust that included material that was produced within older stars and liberated into space when the older stars expolded. This happend 5 million years ago. |
| What process added heat to the early earth and how was the earth changed by this heat? | The big bang added the heat. |
| What was the source of the early Earth's water and atmosphere? | from the water cycle. |
| What is the generally accepted age of the earth? | 4.6 Billion years old |
| How are rocks dated? | They are dated by radiometric dating, based on the decay of istopes |
| What is the shape of the earth? | The earth is a sphere. However, it's not a perfect sphere |
| Inner Core | Rich in iron/nickel, behaves like a solid, extremly hot |
| outer core | some composition of Inner Core, but liquid |
| mantle | thickest, 70% volume. |
| crust | layer we live on, composed of granite, relivily light, makes up all contintants and large islands |
| oceanic crust | made of basalt |
| continental shelf | zone brdering a continent. |
| continetnal shelf break | distinct change in slope of the sea floor at the outer edge of the shelf |
| abyssmal plain | flat, ocean basin floor extending seward from base of continental slope and continental rise |
| trenches | long deep narrow depression of the sea florr with relativly steep sides |
| Continental Margin | offshore extension of the continent, slope, width, periodic exposure to air/submersion |
| Continental Slope/Rise | variable slope, thinning of continental crust, depth, submarine canyons, turbidity currentsq |
| Ridge and Rise System | Divides the deep sea floor into a number of semi-isolated basins that can trap and direct the movement of bottom water |
| Trenches | Volcanically and seismically active |
| Abyssmal Plane | Deepest parts of the ocean |
| continental slope | Distinct change in the slope of the sea floor along the continental margin |
