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Earth Science fall
| Question | Answer |
|---|---|
| The crust and the uppermost mantle make up the ridged outer layer of earth is called | lithosphere |
| sea-floor spreading results when _______ occurs between two oceanic plates | divergence |
| A ______ zone is formed when one oceanic plate is forced beneath another plate | subduction |
| Deep ocean ______ are associated with subduction zones | trenches |
| According to the property of paleomagnetism iron-rich rocks show the location of magnetic ____ at the time of their formation | poles |
| The Hawaiian Islands were formed when the pacific plate moved over a mantle plume ______ | hot spot |
| Volcanoes are powered by energy from Earth's ____ | interior |
| Earthquakes are usually associated with _____ | faults |
| In the plate tectonic theory the lithosphere is divided into _____ major plates and several smaller ones | several |
| In the plate tectonic theory a plate can be made up of _____ oceanic and continental crust | both |
| A transform plate boundary can cause an earthquake when the plates _____ past each other | side |
| New oceanic crust is formed at _____ plate boundaries | divergent |
| A _____is an example of a geologic feature at a divergent plate boundary on a continental plate boundary | Rift valley |
| The leading edge of both plates do not ____upward at a subduction zone | bend |
| Oceanic ____{crust} is destroyed at convergent plate boundaries | lithosphere |
| Volcanic island arcs are associated with ___ocean_ocean plate boundaries | continental |
| Ocean floor that is created at the mid-ocean ridge spreading apart equally causing the _____strips of ocean floor to be about the same size on either side of the mid ocean ridge | magnetized |
| The___of sea floor sediments increases as it moves away from the mid-ocean ridge | age |
| Subbduction happens when ____plate sinks beneath a continental plate | oceanic |
| According to the principal of cross-cutting relationships an intrusive rock body is always_____than the rock in which it intrudes | younger |
| _____dating is the process that places geologic events in the proper sequence {by layers} | relative |
| The law of superposition states that the undeformed sequence of sedimentary rocks the ____layers on the bottom | oldest |
| The oldest layer of rock is always on the ____ | bottom |
| Geologic events are listed from oldest to ____ | youngest |
| Radioactivity is produced when unstable _____of an atom breaks apart | nucleus |
| The time it takes for 50% of the nuclei in a radioactive to decay to a stable isotope is called a ____ | half-time |
| Radiometric dating is possible because the rates of decay of radioactive isotope are ____ | constant |
| The ____of a radioactive parent after four half-lives would be one sixteenth | fraction |
| According to the third law of planetary motion the period of revolution of a planet is determined by the distance from the ___ | sun |
| ____planets do not have thin atmospheres | Jovian |
| ___are not considered part of the solar system | Galaxies |
| A stars chemical spectrum offers/tell us about its ___composition | chemical |
| An objects ____gets shorter as it moves closer | wave length |
| Using the ___effect astronomers can determine if a star is moving away from or toward earth | doppler |
| A star is said to be born when a ____reaches a temperature high enough for nuclear fusion to begin | protostar |
| ___is the force most responsible for the formation of a star | Gravity |
| In the core of stars nuclear reactions convert Hydrogen{H} to ____{He} | helium |
| In the core of extremely hot red giants nuclear convert ____elements to heavier elements | lighter |
| All stars regardless of size run out of ___and collapse | fuel |
| Red shift of distant galaxies indicates the ____is expanding | universe |
| Greater red shifts in the spectra of galaxies indicate ___speeds | faster |
| Cosmic background radiation supports the Big ___Theory | Bang |
| Earth is about ___billion years old | 4.56 |
| _____sequence stars make up about 90% of the stars on the H-R diagram | Main |
| A ___is a fracture in the Earth where movement has occurred | fault |
| The volcanic landforms at divergent ocean plate boundaries are ____ridges | ocean |
| Most of the active volcanoes are on a belt called the ___of Fire | ring |
| Volcanic islands arcs are the type of landforms that are developed at plate boundaries where one oceanic plate___beneath another | descends |
| ___mountains are a result of continental-continental boundaries | folded |
| Continental volcanic arcs can be produced at an oceanic-continental_____boundary | convergent |
| Mainly___mountains are produced by ocean-ocean convergence | volcanic |
| Parallel belts of ____mountains and volcanic mountains are produce by ocean-continental convergence | folded |
| The____of an unknown mineral that will scratches glass {5.5} but not quartz {7} is a mineral of 6 | hardness |
| The ___ of mineral with a mass of 41.2g and a volume of 8.2cm is 5.02g/cm | density |
| ____is the property that is least useful in identifying minerals | color |
| ___is the appearance or quality of light reflected from the surface of a mineral | luster |
| The resistance of a mineral to being scratched is called the ___ | hardness |
| The color of the powder from a mineral is called the ___ | streak |
| ___scale i used to determine mineral hardness | Mohs |
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love001_diana