Baseball Accelerated Geoscience Final Exam Review 1 • What are 4 characteristics that all minerals share? • Answer: – 4 of the following: – Definite chem composition – Occur naturally – Inorganic – Solid at room temp – Atoms orderly arrangement • Name 5 tests that can be used for mineral ID • Answer: 5 of the following: Hardness Luster CleavageAcid Smell Magnetism Color Streak Feel Taste2 • What mineral reacts with acid? • Answer: – Calcite • What mineral is the only one that is magnetic? • Answer: – Magnetite 3 • What mineral tastes like (is) salt? • Answer: – Halite • What mineral looks like gold? • Answer: Iron Pyrite/fool’s gold 4 • What is the hardness of your fingernail? • Answer: – 2.5 • What is the hardness of the steel file? • Answer: – 6.5 5 • Why is color not the best property for mineral ID? • Answer: – There can be impurities and/or several minerals can have the same color • Name the three types of rocks • Answer: – Igneous, metamorphic, sedimentary 6 • What three textures that igneous rocks can possess? • Answer: – Course-grained, finegrained, glassy • Name two glassy igneous rocks • Answer: – 2 of the following: – Obsidian, scoria, pumice 7 • What is the main igneous rock that you would find on an ocean plate? • Answer: – Basalt • What coursegrained igneous rock makes up many mountains? • Answer: – Granite 8 • What are the three types of sedimentary rocks? • Answer: – Clastic, organic, chemical • Name two clastic sedimentary rocks. • Answer: – Two of the following: – Conglomerate, sandstone, shale 9 • How do chemical sedimentary rocks form? • Answer: – From the evaporation of mineral-rich bodies of water • What are the requirements for metamorphosis? • Answer: – Heat and pressure 10 • What is the hardest and most valuable form of coal? • Answer: – anthracite • What are the three categories of metamorphic rocks? • Answer: – Banded, foliated, massive 11 • What is the banded metamorphic rock and from what igneous rock was it formed? • Answer: – Gneiss formed from granite • Name two foliated metamorphic rocks and the rock from which they formed. • Answer: – 2 of the following – Slate (from shale) – Anthracite coal (from bituminous coal) – Schist (from slate) 12 • What is the age of an igneous intrusion compared to the rock layers it intrudes? • Answer: – It is younger • According to the law of superposition, where would you find the youngest rock layers? • Answer: – On/near the surface (top of sedimentary rock layers) 13 • What type of rocks often contain fossils? • Answer: – Sedimentary • What are the characteristics of an index fossil? • Answer: – Wide geographic distribution and existed for short time 14 • What term is defined as the amount of time it takes for 50% of a radioisotope to decay? • Answer: – Half-life • What type of radioisotope would be used to date a fossil that is suspected to be about 10,000 years old • Answer: – Carbon-14 or Carbon dating 15 • How much of the radioactive parent material would exist after three half-lives • Answer: – 12.5% or 1/8 of the original amount • What term is defined by “the present is the key to the past?” • Answer: – Uniformitarianism 16 • Name three of the four types of plate boundaries • Answer: – – – – – 3 of the following: Collision Subduction Diverging Sliding/transform • What layer of the Earth has partially melted rocks and convection currents? • Answer: – The asthenosphere 17 • What type of volcano alternates between eruptions of ash and lava? • Answer: • Name the other two types of volcanoes. • Answer: – Cinder cone and shield – Composite 18 • What volcano produces primarily basaltic lava? • Answer: – Shield • What are two features found at diverging plate boundaries • Answer: – Mid-ocean ridge – Rift valley 19 • How did the Hawaiian Islands form? • Answer: – The Pacific plate moved over a stationary hot spot; the island chain formed in a line as the movement progressed • What are two features found at a subduction boundary? • Answer: – 2 of the following: – Deep sea trench, mountain building (volcanoes), earthquakes 20 • Name three pieces of evidence used to support the idea that Pangea existed. • Answer: – 3 of following: – Puzzle fit of continents, unique rocks on S. American and African coasts, unique fossils on S. American and African coasts, mountain ranges continous from N. America and Europe, tropical plants in cold regions • What type of fault results from compressional stress? • Answer: – Reverse fault 21 • What three types of waves are released by an earthquake? • Answer: – S, P, and L waves • What is the order of arrival time at seismograph station (speed)? • Answer: – P, S, L 22 • How much more intense is an earthquake with magnitude 8 vs. earthquake of magnitude 6? • Answer: – 100 times as great • What happens to SP lag time if the distance from an earthquake to the seismograph station increases • Answer: – The lag time also increases 23 • Name three types of mountains we studied. • Answer: – – – – – 3 of the following: Fault block Folded Volcanic Dome • What is a contour interval • Answer: – The amount of elevational change between contour lines 24 • How can you identify a river on a topographic map (besides the name of the river!) • Answer: • What is a benchmark? • Answer: – A marker in the ground indicating the exact elevation above sea level – The contour lines point upstream in a “V” pattern 25 • How are hills shown on a topo map? • Answer: – Concentric circles • Name 3 examples of physical (mech.) weathering. • Answer: – – – – – – – 3 of the following: Roots growing into rock Ice wedging Heating/cooling Wave action Wetting and drying Exfoliation 26 • What shape is a valley formed by a youthful river? • Answer: – V-shaped • What are moraines? • Answer: – The general game for the accumulation of rock and soil materials deposited at the end or sides of glaciers 27 • What type of lakes are often formed when a glacier retreats, but leaves a huge chunk of ice to melt? • Answer: – Kettle lakes • What is a meander and what could be formed if it continues to grow? • Answer: – A meander is a bend in an old-age river, and eventually could form an oxbow lake 28 • What type of front could produce short bursts of thunderstorms, hail, and tornadoes? • Answer: – Cold front • What large vertically forming thunderclouds are often associated with these storms? • Answer: – Cumulonimbus clouds 29 • What are five things that we studied that can be ascertained from a station model? • Answer: – – – – – – – – 5 of the following: Wind speed -Temp. Wind direction -DewPt Cloud cover Pressure Present/past precipitation Cloud types Others? • What natural phenomenon results from the spinning of the Earth and influences air and ocean movement • Answer: – Coriolis effect 30 • What term describes the temperature at which relative humidity is 100%? • Answer: – Dew point • What two charactistics would exist for maritime tropical air masses? • Answer: – Warm and moist 31 • From what type of pressure center do weather fronts extend? • Answer: – Low pressure center • What symbols are found on the line for a cold front? • Answer: – Triangles (blue) 32 • What name is given to elongated, tear-shaped deposits of glacial till? • Answer: – Drumlins • What effect do large bodies of water have on temperature. • Answer: – They have a moderating effect (warmer by water in winter, and cooler in summer) 33 • What is the difference between climate and weather? • Answer: – Climate involves long-term patterns of an area, while weather refers to the specific conditions that are occurring at a particular place at a particular time • What two days of the year have the most and least hours of sunlight (N. hemisphere)? • Answer: – June 21 most, December 21 least 34 • What type of storm produces the world’s strongest winds? • Answer: – Tornadoes • What part of the planet experiences the largest extremes of temperature and daylight? • Answer: – The north and south pole 35 • What phenomenon results from altered ocean currents in the southern Pacific Ocean? • Answer: – El Nino • Why does it tend to rain more on the windward side of a mountain? • Answer: – Moist air cools as it rises to go over the mountain; as it cools the precipitation falls 36 • What is the specific heat capacity of a substance? • Answer: – The resistance by an object to a change in temperature • Where in a thunderstorm do tornadoes often occur? • Answer: – At the back of the storm 37 • Name 4 of earth’s biomes • Answer: – – – – – – – 4 of the following: Grasslands Tropical rainforest Taiga Temperate/deciduous forest Desert Arctic tundra • Which of the biomes at the left do we live in? • Answer: – Deciduous forest 38 • Answer: • Answer: 39